Sally's father: What do you want for your birthday, Sally?
Sally: I want a new bicycle. My old one is too small for me.
Father: But you already have a bicycle. Can we buy something else?
Sally: Please, Dad. I really need a bigger one.
Father: Alright, but you must promise to ride safely.
Sally: I promise. Thanks, Dad!
Which of the following is TRUE according to the conversation?
A)Sally wants to buy a gift for her father.
B)Sally already has a bicycle but it is too small for her.
C)Sally's father refuses the idea at first and never changes his mind.
D)Sally promises to ride very fast.