Which EIGRP feature should a designer consider to limit the scope of EIGRP queries and minimize convergence time?

Which EIGRP feature should a designer consider to limit the scope of EIGRP queries and
minimize convergence time?

A.
Using multiple EIGRP processes

B.
Tuning down the EIGRP delay parameter

C.
EIGRP stub routing

D.
Limiting the number of EIGRP neighbor per device