x$($t$)=$u$($t$)$ h$($t$)=$u$($t$)$ then y$($t$)$ is

Select one:

a$.$ y$($t$)=$tu$($t$)$

b$.$

y$($t$)=$t squared u left parenthesis t right parenthesis

c$.$ y$($t$)=$t$+1$

d$.$ y$($t$)=$t