role and in no other case?

Which method call returns true only if the currently logged in user has the catalog_admin

role and in no other case?
A . g_user.hasRole(‘catalog_admin’)
B. g_user.hasRoleExactly(‘catalog_admin’)
C. g_user.hasRoleOnly(‘catalog_admin’)
D. g_user.hasRoleFromList(‘catalog_admin’)

Answer: B

Explanation:

Reference: https://community.servicenow.com/community? id=community_QUESTION NO:&sys_id=dff705e6db7757c0d58ea345ca96196b