Suppose a monopoly operates two plants, each producing the same product, and that for each quantity, marginal cost in plant $1$ is lower than in plant If MR$1$ is the profit $-$maximimizing marginal revenue in plant $1$ and MR$2$ is the profit$-$maximizing marginal revenue in plant $2,$ then which of the following statements is correct?

I. MR$1>$MR$2$

ii$.$ MR$1$MR$\_(1)=$MR$\_(2)$

A$.$ Orly if is corred.

B$.$ Only its atrect

C$.$ Neither i nor it is curred

D$.$ Both i and il are combert