An instruction is stored at the location 300 along with its address field at the location 301. The address field has value 400. A processor register R1 consists of the number 200. Compute the effective address if addressing mode of the instruction is

a) Direct;

b) Immediate;

c) Relative;

d) Register indirect;

e) Index with R1 as index register. Add comments which clarify your mental process and how you came up with your solution.