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Operating Systems Concepts - Engineering

Q1:

Addressing modes

A defines the fundamental method of determining effective operand addresses

B are variations in the use of fundamental addressing structures, or some associated actions which are related to addressing.

C performs indicated operations on two fast registers of the machine and leave the result in one of the registers.

D all of the above

E None of the above

ANS:B - are variations in the use of fundamental addressing structures, or some associated actions which are related to addressing.

I think the answer is (A).

If not then why B?