Read the following conversation and answer the question.

W: Oh, I wish we had taken the lift.

M: Cheer up. It's already on the 8th floor.

W: But I am really tired out.

M: Just think it's helpful for our health.

W: Possibly, but if I know it was so far up, I wouldn't have suggested walking.

Question: How does the woman feel about her suggestion? 

- It's helpful.

- It's interesting.

- She regretted her suggestion.


She regretted her suggestion.