She had only just put the phone down when her boss...

Câu hỏi: She had only just put the phone down when her boss rang back.

A Hardly had she put the phone down when her boss rang back.

B No sooner had she put the phone down when her boss rang back.

C Hardly did she put the phone down when her boss rang back.

D Hardly she had put the phone down when her boss rang back.