Which statement best describes the relationships between AAA function and TACACS+, RADIUS based on the exhibit shown?

Which statement best describes the relationships between AAA function and TACACS+, RADIUS based on the exhibit shown?

A.
TACACS+ – PG1 and PG3
RADIUS – PG2 and PG4

B.
TACACS+ – PG2 and PG4
RADIUS – PG1 and PG3

C.
TACACS+ – PG1 and PG4
RADIUS – PG2 and PG3

D.
TACACS+ – PG2 and PG3
RADIUS – PG1 and PG4