Give full attention to your studies. You will succeed.

Câu hỏi: Mark the letter A, B, C or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.
Give full attention to your studies. You will succeed.
A. Unless you give full attention to your studies, you will not succeed.
B. Unless you give full attention to your studies, you will succeed.
C. Give full attention to your studies as you will succeed.
D. Give full attention to your studies, or you will succeed.