The first part of the Genius Quiz has 30 questions and the second part has 50 questions. Alberto answered exactly 70 \% of the 30 questions in the first part correctly. He answered exactly 40 \% of the 50 questions in the second part correctly. The percentage of all of the questions on the quiz that Alberto answered correctly is closest to
Answer Choices
A. 59
B. 57
C. 48
D. 51
E. 41