Read the following conversation and answer the question.

M: I'd like to pay a visit to the Smiths at 3:30 p.m. Will you go with me, Mary?

W: I'd love to, but I won't be off work from my factory until 4:00 p.m. How about 4:15? I'll be free then, Jack.

M: OK. Let's meet at the bus stop and take the No.5 bus to go there.

W: Why not by bike? The bus would be crowded at that time.

M: But my bike is broken.

W: You can use your sister's new bike, can't you?

M: Yes. I'll wait for you in front of the bookstore opposite the cinema.

Question: What time will they go to see the Smiths? 

- 3:30.

- 4:00.

- 4:15.


4:15.