205. --- Would you like to come to the dinner party here on Saturday?

　　 --- Thank you. I’d love to, _____ I’ll be out of town at the weekend.

　　 A. by　　　　　　　　　　　　　 B. for　　　　　　　　　　　　　 C. so　　　　　　　　　　　　　　 D. with