The doubling period of a bacteria population is 56 minutes. After 87 minutes, the bacteria colony's population has grown to 44,028. Determine the initial population of the bacteria colony. Round the solution to the nearest whole number. Determine the population of the bacteria colony after 4 hours. Round the solution to the nearest whole number.
a) Initial population: 19,728; Population after 4 hours: 35,664
b) Initial population: 20,000; Population after 4 hours: 35,000
c) Initial population: 20,000; Population after 4 hours: 37,000
d) Initial population: 19,000; Population after 4 hours: 36,000