In a renowned city, the average birth rate is 4 people every two seconds and the death rate is 2 people every two seconds. Estimate the size of the population net increase that occurs in one day. Choose the correct option:
A) 86,400  B) 172,800  C) 468,830  D) 338,200  E) 259,200
Every 2 seconds, 2 persons are added (4-2). Every second 1 person are added.   In a day 24hrs = 24 * 60 Minutes = 24 * 60 * 60= 
<gadget id="calculator">24 * 60 * 60</gadget>
<output>86_400</output>
86400 seconds.   86400 * 1= 
<gadget id="calculator">86400 * 1</gadget>
<output>86_400</output>
86400   Option 86,400
<result>A</result>
In a renowned city, the average birth rate is 4 people every two seconds and the death rate is 2 people every two seconds. Estimate the size of the population net increase that occurs in one day.