In order/ not/ have/ any/ digestive disease, you/ should/ eat/ healthily

A. In order not to have any digestive disease, you should eat healthily. 

B. In order not have any digestive disease, you should to eat healthily. 

C. In order not have any digestive disease, you should eat healthily. 

D. In order not to have any digestive disease, you should to eat healthily.