Consider the following dialogue between two friends:

A: Hello, what's up?
B: Hi, Mary. I’m fine and you?What are you up to?
A: I’m planning a party this weekend. Do you want to come?
B: I’d love to! Could you give me the address, please?
A: It is going to happen here, at my house!
B: Ok! I’ll be there! See ya.

Mark the alternative that refers to the subject of the text.