I got this bicycle for____; my friend gave it to me when she bought a new one.

I got this bicycle for____; my friend gave it to me when she bought a new one.
A.everything B.something C.anything D.nothing
头一次见这种语法现象,能讲一下something在这的用法吗?在什么情况下选D.
一开始就选D，但受网上误导，又觉得B也好像对，纠结了一会。但现在还是觉得D对。