Join or combine each pair of sentences into one sentence, using who, whose, whom, which or that:
The principal sent for the peon. The peon came at once.

Options

A. join or combine each pair of sentences using who or which :

B. join or combine each pair of sentences using who or which :

C. join or combine each pair of sentences using who or which :

D. join or combine each pair of sentences using who or which :