D that is the answer but I need 20 words to send this text
Answer:
Following are the answer to this question:
Explanation:
A)
The memory size is 1 Giga Bytes which is equal to

B)

calculating the register Bits:

C)
Immediate value size while merging the additional benefit with the address field:



The range is accomplished by dividing the bits by 2 into the two sides of the o and the number is one short to 0.