—I'm sorry for my fault. Are you angry, Jane?

—No, I _____ you. It doesn't matter, Bob. Forget it![ ]

A. am not mad at    

B. don't believe in

C. don't care about  

D. am not kind to

史铁生《我与地坛》中所写的“园子（的景物）荒芜但并不衰败”的象征意义是什么？