Mark the letter A, B, C, or D to indicate the sentence that is best written from the words/phrases given.Câu hỏi not have/credit card/ find/difficult/book/airline ticket/online A. Although I didn't have credit card, I found difficult to book an airline ticket online. B. I don't have a credit card, I found it difficult to book an airline ticket online. C. Not having a credit card, I found it difficult to book an airline ticket online. D. As I don't have a credit card, so I found it difficult to book an airline ticket online.