As well as being very __________ about the horsesˊ condition the old horseman was equally concerned about their appearance when picking horses.

As well as being very __________ about the horsesˊ condition, the old horseman was equally concerned about their appearance when picking horses.

A、 particular

B、 worried

C、 feared

D、 delightful

请帮忙给出正确答案和分析，谢谢！