It is extremely important that as one follows a software development project,security activities are performed

A.
before release to production, so that the project is not delayed

B.
if a vulnerability is detected in your software

C.
in each stage of the life cycle

D.
when management mandates it

Explanation:
C: Security activities should be done in parallel with project initiation activities and, indeed, with every task throughout the project. Page 182.