1. [M] (a) Give a short sequence of machine instructions for the task “Add the contents of memory                   locationAto those of location B, and place the answer in location C”. Instructions

Load    Ri,    LOC

and

Store    Ri,   LOC

are the only instructions available to transfer data between the memory and the generalpurpose registers. Add instructions are described in Section 1.3. Do not change the contents of either location A or B.

(b) Suppose that Move and Add instructions are available with the formats

Move    Location1,   Location2

and

Add       Location1,   Location2

These instructions move or add a copy of the operand at the second location to the first location, overwriting the original operand at the first location. Either or both of the operands can be in the memory or the general-purpose registers. Is it possible to use fewer instructions of these types to accomplish the task in part (a)? If yes, give the sequence.