The teacher said,"Tell me students, what have you learnt from the lectures this week?"

A

The teacher asked the students what they learnt from the lectures that week.

B

The teacher asked the students to tell him what they learnt from the lectures that week.

C

The teacher wanted to know what the students learnt from the lectures that week.

D

The teacher asked the students to tell him what they had learnt from the lectures that week.