Say that data is in memory and the base register has been initialized correctly. You have the following program:

Ih $$5,0($$$10)lb$$$6,4($$$10)$ addu $$7,$$$5,$$$4$

$1$ points

What does the addu instruction do$?(16\mathrm{.}7)$

a$.$ It performs the binary addition algorithm on whatever $32-$bit patterns are in registers $$4$ and $$5.$

b$.$ It performs a $16-$bit addition because that is the size of the largest operand.

c$.$ The instruction causes a trap because the operands are not the same sizes.

d$.$ It performs an $8-$bit addition.