Choose the sentences that are closest in meaning to the given sentence(s).

While the director was guiding us through the museum, he gave us a special explanation.

A. Guiding us through the museum, a special explanation was given by the director.

B. Guided us through the museum, the director gave us a special explanation.

C. A special explanation was given to us while guiding us through the museum.

D. Guiding us through the museum, the director gave us a special explanation.