How does having an EIGRP feasible successor speed up convergence?

A.	EIGRP sends queries only if there is a feasible successor, which decreases the number of routers that are involved in convergence.
B.	EIGRP sends queries only if there is not a feasible successor, which causes less control traffic to compete with data.
C.	EIGRP immediately installs the loop-free alternative path in the RIB.
D.	EIGRP preinstalls the feasible successor in the RIB in all cases, which causes traffic to switch more quickly.