Combine the sentences using an appropriate coordinating conjunction in the box

Exercise 4. Combine the sentences using an appropriate coordinating conjunction in the box. 
1. Eat more fruit and vegetables. I want to be fitter and healthier. 
A. I want to be fitter and healthier , so I eat more fruit and vegetables.
B. I want to be fitter and healthier , but I eat more fruit and vegetables.
C. I want to be fitter and healthier , or I eat more fruit and vegetables.
D. I want to be fitter and healthier , and I eat more fruit and vegetables.
2. You have a sunburn. You don’t wear a sun hat
A. You have a sunburn, so You don’t wear a sun hat.
B. You have a sunburn, but You don’t wear a sun hat.
C. You have a sunburn, or You don’t wear a sun hat.
D. You have a sunburn, and You don’t wear a sun hat.
3. You may have an allergy. Be careful with what you eat and drink. 
A. Be careful with what you eat and drink, so you may have an allergy. 
B. Be careful with what you eat and drink, but you may have an allergy. 
C. Be careful with what you eat and drink, and you may have an allergy. 
D. Be careful with what you eat and drink, or you may have an allergy.
4. Tom has a temperature. Tom has a sore throat. 
A. Tom has a temperature, and he has a sore throat. 
B. Tom has a temperature, so he has a sore throat. 
C. Tom has a temperature, but he has a sore throat. 
D. Tom has a temperature, or he has a sore throat.
5. You are catching flu. You don't wash your hands very often. 
A. You are catching flu, or you don't wash your hands very often. 
B. You are catching flu, and you don't wash your hands very often. 
C. You are catching flu, so you don't wash your hands very often. 
D. You are catching flu, but you don't wash your hands very often.