Could someone explain why the answer is what it is. Please show examples as to why the answer is what it is.

Given R = 10, PC = 20, and index register X = 30, show the value of the accumulator for the following instructions. All memory locations Q contain the value Q + 1. Each instruction uses two memory locations.

a) LDAC 10 - AC = 11

b) LDAC (10) - AC = 12

c) LDAC R - AC = 10

d) LDAC @R - AC = 11

e) LDAC #10 - AC = 10

f) LDAC $10 - AC = 33

g) LDAC 10(X) - AC=41