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.
Jack wanted to get some fresh air in the apartment. He opened the window
A. Jack wanted to get some fresh air in the apartment because he opened the window.
B. Having opened the window, the apartment could get some fresh air by Jack
C. Jack got some fresh air in the apartment, even though he opened the window.
D. Jack opened the window in order to get some fresh air in the apartment