Question $21$

Which of the following statements about the

register in RISC$-$V are true? $($Select all that

apply$)$

The $x0$ register always holds the value zero.

The $xO$ register can be used to hold temporary values during calculations.

Writing to the $xO$ register has no effect.

The $x0$ register is often used for returning error codes from functions.

The $x0$ register can go by its alias name of "zorro"