【单选题】

Man: Are you coming with us to the supermarket this afternoon
Woman: I promised Lucy that I'd help her with her painting project, and I'm really looking forward to it.
Question: What does the woman mean

A．She doesn't need anything at the supermarket.

B．She won't be joining the man.
C．She and Lucy are learning how to paint.
D．She'd rather go to the supermarket than help Lucy.