Which system variable tells how far into the rest of each incomplete plan the optimizer should look to evaluate whether it should be expanded further?

Which system variable tells how far into the rest of each incomplete

1.	Which system variable tells how far into the rest of each incomplete plan the optimizer should look to evaluate whether it should be expanded further?
A.	optimizer_prune_level
B.	optimizer_search_depth
C.	optimizer_search
D.	optimizer_prune
Answer» C. optimizer_search