Indicate the register name that provides each of the following special purposes:

This register is automatically used by multiplication and division operation;

a$)$ also referred to as the accumulator register: $\_\_\_\_\_\_\_\_\_$

b$)$ The CPU automatically uses this register as a loop counter: $\_\_\_\_\_\_\_\_\_$

Question $5$ options:

Blank # $1$

Blank # $2$