adding mixed numbers and reducing to simplest form Quiz

Question Number 1 2/4 + 3 7/4=? A. 3 9/5 B. 3 5/8 C. 3 7/9 D. 3 2/1 E. 3 6/7 F. 3 2/5 Question Number 2 4 1/4 + 3/4=? A. 5 B. 9 C. 4 D. 23 E. 5 F. 8