What is the purpose of the eigrp stub configuration command?

What is the purpose of the eigrp stub configuration command?

A.
to increase scalability by limiting the EIGRP query range

B.
to reduce the size of the routing table by blocking the D EX (External EIGRP) routes into the EIGRP stub router

C.
to reduce the convergence time by enabling the EIGRP stub router to propagate the EIGRP queries from the EIGRP hub router

D.
to reduce the convergence time by enabling the EIGRP stub router to also perform query requests to the EIGRP hub router