If the population of a certain country increases at the rate of one person every 15 seconds, by how many persons does the population increase in 1 hour?	Choose the most appropriate option.
A) 100  B) 120  C) 150  D) 180  E) 240
Answer = 4 * 60= 
<gadget id="calculator">4 * 60</gadget>
<output>240</output>
240   Answer is 240
<result>E</result>
If the population of a certain country increases at the rate of one person every 15 seconds, by how many persons does the population increase in 1 hour?