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.

Input: Consider Input: Question: A warehouse is labeling computer inventory with 3-digit codes. Each code is to consist of four digits between the numbers 0 and 9. The manager is debating whether to allow any 3-digit codes to have leading zero's before a non-zero number is used. If not allowed, then numbers like0025cannot be used.
The manager wants to measure the magnitude of the number of 3-digit code possibilities that are lost if he disallows the use of leading zero's. How many such codes would be lost?

 Option A: 981

 Option B: 1000

 Option C: 1011

 Option D: 1101

 Option E: 100

Output: Option E


Input: Consider Input: Question: A man ran 20 miles in 2 hours 2 minutes. What was the average speed of the man in miles per hour?

 Option A: 9.72 miles / hour

 Option B: 9.73 miles / hour

 Option C: 9.75 miles / hour

 Option D: 9.78 miles / hour

 Option E: 9.79 miles / hour

Output: Option D


Input: Consider Input: Question: The sum of ages of 5 girls born at the intervals of 3 years each is 70 years. What is the age of the youngest girl?

 Option A: years

 Option B: years

 Option C: years

 Option D: years

 Option E: years


Output: Option A