Choose the best option A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.
You must read the instructions. You won’t know how to use this machine without reading them.
A.Unless you read the instructions, you won’t know how to use this machine.
B.You will know how to use this machine unless you read the instructions.
C.Without reading the instructions, the use of this machine won’t be known.
D.Reading the instructions, so you will know how to use this machine.