Y and Z are in a relay race. Y runs the first leg of the course in 58 seconds. Z runs the second leg of the course in 26 seconds. What was the average time they took to run a leg of the course?	Options:  A) 39  B) 40  C) 41  D) 42  E) 43

Rationale: ( 58 seconds + 26 seconds ) / 2 = 42 seconds correct option is : d
Answer: D