应该是A吧？

问题如下：

A company's Scope 3 emissions are:

选项：

A.emissions from purchased energy.

B.direct emissions from core operations.

C.emissions produced by suppliers and customers.

解释：

C is correct because indirect emissions from the whole value chain, including those produced by suppliers and customers, are classified as Scope 3 emissions.

A is incorrect because the initial focus has been on purchased energy (Scope 2 emissions).

B is incorrect because direct emissions from core operations are classified as Scope 1 emissions.