Timothy completed a bicycle course to raise money for an animal shelter in his community. It took him 3 3/6 hours to complete the first part of the course, 2 5/6 | 2 ours to complete the second part of the course, and 1 2/6 hours to complete the last part of the course. How long did it take Timothy to complete the entire course?
A 6 2/6 hours B 7 4/6 hours C 7 1/6 hours D 4 1/6 hours
