It/ very kind/ you/ help me/ start/ engine.

Câu hỏi: It/ very kind/ you/ help me/ start/ engine.

A. It's very kind for you to help me start the engine.

B. It's very kind to you to help me start the engine.

C. It's very kind that you help me start the engine.

D. It's very kind of you to help me start the engine.