Which command should you issue first to configure EIGRP for IP ?

[PlAwAnSaI]

You need to configure EIGRP on a new router. Which command should you issue
first to configure EIGRP for IP?
A. router eigrp autonomous-system-number
B. ip eigrp autonomous-system-number
C. ip eigrp routing
D. router eigrp process-id
E. None of the other alternatives apply