3. A processor has been designed based on Harvard architecture. The sizes of each instruction and each register are fixed, and they are 16-bits and 8-bits, respectively (30 points): a) If you want to design the memory and bus system for this processor, what size would you choose for each cell of the data memory and the instruction memory? Please justify your answer. b) Based on the cell size you have chosen in (a), what will be the size of the address-bus to point at data-memory locations if the data memory is 1 Mbyte? c) Based on the cell size you have chosen in (a), what will be the size of the instruction address-bus if the instruction memory is 1 Kbyte