In this task you are given a small conversation between two persons and 4 options on how the conversation should continue. Your job is to choose the most reasonable option. The conversation and the options are separated by a newline character. Each dialogue in the conversation are separated by a comma. F and M indicate female and male, respectively.

M: Hello this is Simon Marshall. I spoke to you the other day about renting Flat 3A. ,F: Oh, yes, hello, Simon. What can I do for you? ,M: Well, I just want to ask a few practical details. Firstly, you mentioned a storeroom. Where exactly is that? Is it next to 3A, on the third floor? ,F: Well, the apartment's on the third, yes, but the storeroom's a little way away, just past the second door to the right. Under the stairs, in fact. ,M: But it's on the same floor, isn't it? ,F: Yes, it is. ,M: Fine. Is there hot water in the apartment? ,F: Oh, yes, it runs off the central heating. It's at a fixed 60 degrees. It used to be set at 55, but last year we were asked to increase it, so we did.
(A) M: Why is the hot water only 50 degrees? (B) M: Thank you. I know that the hot water is 60 degrees. (C) M: The hot water is 55 degrees, right? (D) M: I didn't hear you. Please could you tell me again?
B