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.

[EX Q]: Question: A bus takes 3 hours to cover a distance of 500 Km. how much should the speed in Kmph be maintained to cover the same direction in 5/3th of the previous time?

 Option A: 75 Kmph

 Option B: 100 Kmph

 Option C: 90 Kmph

 Option D: 65 Kmph

 Option E: 70 Kmph
[EX A]: Option B

[EX Q]: Question: The sector of a circle has radius of 42 cm and central angle 135o. Find its perimeter?

 Option A: 91.5 cm

 Option B: 92.2 cm

 Option C: 28.9 cm

 Option D: 29.2 cm

 Option E: 183 cm
[EX A]: Option E

[EX Q]: Question: The graph of a quadratic function and the graph of a linear function in the xy plane can intersect in at most how many points

 Option A: one

 Option B: Two

 Option C: Three

 Option D: Four

 Option E: More than four
[EX A]:
Option E