Originally, a Petri dish contained 200,000 bacteria. After a scientist applied an antibiotic, the number of bacteria decreased by

75%

per hour.

Which function could model this situation?

A.) f(x)=200,000(0.25)x

B.) f(x)=0.75(200,000)x

C.) f(x)= 0.25(200,000)x

D.) f(x)= 200,000(0.75)x

How many bacteria will be in the Petri dish after 3 hours?

Round your answer to the nearest whole number.