Read the dialogue and answer the question.
Emma: Hey, Jack! There is a new sci-fi movie at the cinema. Would you like to come with me?
Jack: I'd love to, but I can't. I have to finish my science project.
Emma: That's a pity. How about going on Saturday?
Jack: Sure, why not? I'll be free then.
According to the conversation above, which of the following is true?
A)Jack refuses both invitations.
B)Jack accepts the invitation for Saturday.
C)Jack accepts the first invitation.
D)Emma cancels the plan for Saturday.