how many total prefixes for have an incoming local label assigned (including the imp-null)?

Scenario:

From the PE8 router, how many total prefixes for have an incoming local label assigned (including
the imp-null)?

A.
45

B.
21

C.
66

D.
22

Explanation:

Need to run command at PE8 router so that we can get the value .prefix value is answer for these