Which command will silently drop a matching packet?（）

A.set routing-options static route 10.1.1.1/32 no-retain

B.set routing-options static route 10.1.1.1/32 discard

C.set routing-options static route 10.1.1.1/32 reject

D.set routing-options static route 10.1.1.1/32 passive