虽然答对了，但是请帮忙解释一下B选项吧

NO.PZ2016072602000003问题如下 All the following are operationrisk loss events, except: invishows up a branpresenting a chewritten a customer for amount substantially exceeng the customer low checking account balance. When the bank calls the customer to ask him for the fun, the phone is sconnecteanthe bank cannot recover the fun. A bank, acting a trustee for a lopool, receives less ththe projectefun e to layerepayment of certain loans. ring aerse market movement, the computer network system becomes overwhelme anonly intermittent pricing information is available to the bank's trang sk, leang to large losses trars become unable to alter their hees in response to falling prices. A loofficer inaccurately enters client financiinformation into the bank’s proprietary cret risk mol. B is correct. Statement represents externfrau whiis incluin operationrisk. Statement represents a systems failure. Statement is a failure in internprocesses. ​什么属于internprocess而不是people

NO.PZ2016072602000003问题如下 All the following are operationrisk loss events, except: invishows up a branpresenting a chewritten a customer for amount substantially exceeng the customer low checking account balance. When the bank calls the customer to ask him for the fun, the phone is sconnecteanthe bank cannot recover the fun. A bank, acting a trustee for a lopool, receives less ththe projectefun e to layerepayment of certain loans. ring aerse market movement, the computer network system becomes overwhelme anonly intermittent pricing information is available to the bank's trang sk, leang to large losses trars become unable to alter their hees in response to falling prices. A loofficer inaccurately enters client financiinformation into the bank’s proprietary cret risk mol. B is correct. Statement represents externfrau whiis incluin operationrisk. Statement represents a systems failure. Statement is a failure in internprocesses. 如何区分cret risk 和 externfraud

NO.PZ2016072602000003 B is correct. Statement represents externfrau whiis incluin operationrisk. Statement represents a systems failure. Statement is a failure in internprocesses. B为什么不属于操作风险，是因为属于信用风险吗。为什么我在同个题另一个答疑看到老师回答说B属于操作风险？那题目不就错了？