Which of the following sentences is correct.

A.I went to a party last night, I left early because I didn’t feel well.

B.I went to a party last night but left early because I didn’t feel well.

C.I went to a party last night, but I left early because I didn’t feel well.

D.I went to a party last night. I left early because I didn’t feel well.

正确答案：I went to a party last night but left early because I didn’t feel well.；I went to a party last night, but I left early because I didn’t feel well.；I went to a party last night. I left early because I didn’t feel well.