In the following questions, a sentence has been given in Direct/Indirect. Out of the four alternatives suggested, select the one which best expresses the same sentence in Direct/Indirect as your answer.
Kala said to Radha, “Who were you speaking to over the phone?”

• Kala asked Radha who she had been speaking to over the phone.

• Kala asked Radha who she has been speaking to over the phone.

• Kala asked Radha that who she has been speaking to over the phone.

• Kala asked Radha that who she has been speaking to over the phone.