$(2$ points$)$ Assume $A=012345678$ and Mask $=0xFFFF0000.$ What are the results of

the following bitwise operations?

$($a$)B=A|||$ Mask;

$($b$)B=A$&$$ Mask;

$(4$ points$)$ Write an assembly program to compute the two's complement of a number using

only arithmetic and logical operations. State your assumptions.