Read the following conversation and answer the question.

W: Paul, is that you?

M: Yes, Mary. What can I do for you?

W: Sorry to call you. But I just delivered my new computer. I am afraid I can't lift it by myself. Could you give me a hand to get it upstairs?

M: Sure. Could you just give me a minute to finish off what I am doing?

W: Yes, of course. But please hurry. The box is getting in the way.

M: Don't worry. I'll be right down.

Question: What is the man doing when the woman calls? 

- He is moving a box

- He is working upstairs

- He is waiting for the delivery


He is working upstairs