7. Suppose you want to isolate the middle 4 bits of a byte by placing 0s in the other 4 bits without disturbing the middle 4 bits. What mask must you use together with what operation?
(A) Mask: 00001111, Operation: Bitwise OR
(B) Mask: 11110000, Operation: Bitwise AND
(C) Mask: 11110000, Operation: Bitwise OR
(D) Mask: 00001111, Operation: Bitwise AND
(E) Mask: 11111111, Operation: Bitwise XOR

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