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. Her living conditions were difficult. However, she studied very well. A. Difficult as her living condition, she studied very well. B. She studied very well thanks to the fact that she lived in difficult conditions. C. She studied very well in spite of her difficult living conditions. D. Although she lived in difficult conditions, but she studied very well.