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.

[Q]: Question: 0.002 x 0.008 = ?

 Option A: 1.6e-05

 Option B: 0.001

 Option C: 0.01

 Option D: 0.1

 Option E: NONE OF THESE
[A]: Option A


[Q]: Question: The toll for crossing a certain bridge is $0.75 each crossing. Drivers who frequently use the bridge may instead purchase a sticker each month for $13 and then pay only $0.10 each crossing during that month. If a particular driver will cross the bridge twice on each of x days next month and will not cross the bridge on any other day, what is the least value of x for which this driver can save money by using the sticker?

 Option A: 12

 Option B: 15

 Option C: 16

 Option D: 28

 Option E: 29
[A]: Option A


[Q]: Question: In covering a distance of 15 km, A takes 2 hours more than B. If A doubles his speed, then he would take 1 hour less than B. A's speed is:

 Option A: 5 km/h

 Option B: 8 km/h

 Option C: 10 km/h

 Option D: 15 km/h

 Option E: 2.5 km/h
[A]:
Option E