Following the standard implementation approach outlined in the statement of work, what do you tell the customer?

While reviewing the Metric Pack and Specification documents, your customer identifies the need for a different formula for standard measures used in benchmarking.

Following the standard implementation approach outlined in the statement of work, what do you tell the customer? There are 2 correct answers to this question.
A . The standard measure that is benchmarked can be changed
B. A measure override is required to change the formula
C. A change order is required to add a new custom measure
D. The standard Measure that is benchmarked CANNOT be changed

Answer: B, D