Which document, produced during the ‘identify the programme’ process, describes high-level costs, benefits and risks?

Comprehensive and Detailed Explanation From Exact Extract:

The Programme Brief is developed during the “Identify the Programme” process and includes initial outlines of the programme’s costs, benefits, risks, scope, and intended outcomes.

MSP Foundation, 5th Edition states:

“The programme brief provides an outline of the vision, anticipated benefits, high-level costs, key risks, and scope of the programme.”

Therefore, option B is correct.