The following statements apply to a single-longword top-of-stack (TOS) cache implemented as in…

The following statements apply to a single-longword top-of-stack (TOS) cache implemented as in figure 16.6. Make each of these statements true by choosing the correct word from the triple in parentheses. A. The TOS cache register (always, sometimes, never) contains the TOS longword after a push stack transaction.

B. The TOS cache register (always, sometimes, never) contains the TOS longword after a pop stack transaction.

C. A push transaction (always, sometimes, never) writes a stack longword into main memory.

D. A pop transaction (always, sometimes, never) reads a stack longword from main memory.

E. A push transaction that follows a pop transaction (always, sometimes, never) writes into main memory.

F. A pop transaction that follows a push transaction (always, sometimes, never) reads from main memory.