(1) Roger was all by himself on guard duty in the middle of the night. (2) When he heard a noise, he called out, “Who goes there?” (3) Suddenly, a hooded man stepped out from behind a corner and showed his face. (4) “I’m glad it’s just you,” he said.

In which sentence is it unclear to whom or what the pronoun refers?

A. 1

B. 2

C. 3

D. 4