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: How many positive integers G less than 10,000 are such that the product of their digits is 210?

 Option A: 24

 Option B: 30

 Option C: 48

 Option D: 54

 Option E: 72

Answer: Option D


Question: Question: If a light flashes every 6 seconds, how many times will it flash in 1/4 of an hour?

 Option A: 51

 Option B: 151

 Option C: 251

 Option D: 351

 Option E: 451

Answer: Option B


Question: Question: A rectangular box measures internally 1.6m long, 1m broad and 60cm deep. The number of cubical box each of edge 20cm that can be packed inside the box is:

 Option A: 30

 Option B: 60

 Option C: 90

 Option D: 120

 Option E: 140

Answer:
Option D