What could be causing this problem?

Your company is rolling out Skills and Certifications to encourage employees to track their skills and also decide which skills they would like to acquire. After rolling this feature out, end-users have noted they can’t add their assignments to build their "Experience".

What could be causing this problem?
A . The "Enable Experience" checkbox in the enable-skills-experience configuration option is not selected
B. The "Enable Experience" checkbox in the Skills Management custom setting is not selected
C. The "Enable Experience" field on the PSA contact record is not selected

Answer: C