He sees us coming, and unaware that we had learned of his treachery, greeted us with a smile

Question

(A) He saw us coming, and unaware that we had learned of his treachery, greeted us with a smile.&nbsp; (B) He saw us coming, and unaware that we learned of his treachery, greeted us with a smile.&nbsp; (C) He saw us coming, and unaware that we were learning of his treachery, greeted us with a smile (D) He saw us come, and unaware that we had learned of his treachery, greets us with a smile.&nbsp;

Jitender Kashyap · Accepted Answer

(A) He saw us coming, and unaware that we had learned of his treachery, greeted us with a smile.&nbsp;