A student walked out from the classroom towards the the library. She went first to the canteen on the left side, 24 ft. away. After a cup of tea, took a right turn and went to the laboratory 13 ft. away. she talked to a friend, in the garden 3 ft to the left. and continued walking in the same direction to the library, 10 ft more. What was the actual distance between the library and the classroom ?

• A. 42 ft.
• B. 65 ft.
• C. 39 ft.
• D. 34 ft.