A first part of a main program calls procedure Power to compute $xy,$ where $x$ is in $$s0,y$ is in $$s1.$ Later, the program is to call Power

again, but this time $x$ is in $$$3$ and $y$ is in $$$7.$ How might the program pass the parameter values to Power?

Copy $$s3$ to $$a0,$ and $$s7$ to $$a1.$

Not possible; $x$ and $y$ must be in $$s0$ and $$s1.$