Consider the following instructions of 8085 microprocessor
1. MOV B, C
2. STA address
3. ORI byte
The correct sequence in the decreasing order of their respective memory space requirement is

A. 3, 2 and 1

B. 1, 3 and 2

C. 1, 2 and 3

D. 2, 3 and 1

Answer: Option D