Question 41 - 43 refer to following paragraph:

M: (41) Hello, I saw your advertisement on TV promoting your grand opening. Can you tell me about your clothing store?
W: Welcome to our store. Our store specializes in men’s suits and formal wear. (42) As a grand opening promotion, we are offering free delivery on all purchases this month.
M: Wow, that’s great. I need to buy a suit for my wedding, so I stopped by. Could you show me something I might like?
W: Sure. We have a variety of wedding suits. Please come here. (43) First, I would like to have my assistant take your measurements so we can find a suit that fits you well. It won’t take much time.

41. How did the man learn about the store?