He _____ China very much. He _____ to China three years ago. [ ]

A. likes; comes            

B. likes; came

C. like; comes            

D. like; came

某木工制作实验柜需要大号木板40块，小号木板100块，已知建材市场出售A、B两种不同型号的木板．经测算知A型木板可同时锯得大号木板2块，小号木板6块，B型木板可同时锯得大号木板1块，小号木板2块．已知A型木板每张40元，B型木板每张16元，问A、B两种木板各买多少张，可使资金最少？并求出最少资金数．