You are given a math word problem and you are supposed to make use of mathematical concepts like probability, combinatorics, linear equations, sequences/series, or simple operators like addition, subtraction, division, or multiplication to answer the given question. Choose the best option from the 5 given options and report that option.
--------
Question: Question: A bike covers a certain distance at the speed of 67km/h in 8 hrs. If the bike was to cover the same distance in approximately 6 hrs, at what approximate speed should the bike travel?

Option A: 89.33 km/h

Option B: 85.34 km/h

Option C: 87.67 km/h

Option D: 90.25 km/h

Option E: 90.64 km/h

Answer: Option A

Question: Question: A lady bought five books namely A,B,C,D,E to distribute her 7 friends. How many ways she can distribute books?

Option A: 7^3

Option B: 7^4

Option C: 7^5

Option D: 7^6

Option E: 7^2

Answer: Option C

Question: Question: Natasha climbs up a hill, and descends along the same way she went up. It takes her 4 hours to reach the top and 2 hours to come back down. If her average speed along the whole journey is 2 kilometers per hour, what was her average speed (in kilometers per hour) while climbing to the top?

Option A: 1.5

Option B: 2.5

Option C: 3.75

Option D: 5

Option E: 7.5

Answer:
Option A