Assume the following shows the contents of memory locations:

The machine program below adds some of the integers in the memory shown above. Which ones and in what order depends on the details of the machine

instructions.

Your task is to carefully trace the execution of the machine instructions above to determine the consecutive changes to R$3.$

$($Enter your $16-$bit answers in hex like the following example: $0$x$2$A$3$F$)$

A$.)$ What is the first value assigned to R$3$ by the instructions above?

B$.)$ What is the second value assigned to $R3$ by the instructions above?

C$.)$ What is the third value assigned to R$3$ by the instructions above?

D$.)$ What is the fourth value assigned to R$3$ by the instructions above?