NO.PZ2020011303000093
问题如下：
What are the prime and non-prime ratings used by S&P for money market instruments?
解释：
Prime ratings include A-1+, A-1, A-2, and A-3. Non-prime ratings include B, C, and D.
题目问：S&P对于货币市场工具的prime和non-prime级别都是什么？
Prime ratings 包含A-1+, A-1, A-2, and A-3.
Non-prime ratings 包含 B, C, and D
老师好，prime 和non prime指的就是投资级和非投资级？
