To client software, a notable difference between remote procedure call and ordinary local procedure call is:

A. None. That’s the whole point of RPC!

B. There may be multiple returns from one RPC call.

C. There may be multiple calls for one RPC return.

D. Recursion doesn’t work in RPC.

E. The runtime system may report a new type of error as a result of an RPC.

F. Arguments to RPCs must be scalars.