In 1988 10% of Adult Americans Said the Car Was $19,990,000$

In 1988 10% of adult Americans said the car was the greatest invention of all time. Assuming the same facts apply today and assuming that there are 200 million adult Americans, how many adult Americans say the car is the greatest invention of all time?

A) $19,990,000$
B) $19,000,000$
C) $20,000$
D) $18,000,000$
E) $20,000,000$