“I’ll let you know the answer by the end of this w...

Câu hỏi: “I’ll let you know the answer by the end of this week”, Tom said to Janet.        

A Tom offered to give Janet the answer by the end of the week

B Tom promised to give Janet the answer by the end of the week

C Tom suggested giving Janet the answer by the end of the week

D Tom insisted on letting Janet know the answer by the end of the week