WILL GIVE BRAINLIEST!!
20 POINTS!!

The function f(x) = 4(2)^x represents the number of people who share a cat
video xhours after it first appears on a website. How does the number of
people sharing the video change each hour?

•a. the number increases by 4 each hour

•b. the number increases by a factor of 4 each hour

•c. the number doubles each hour

•d. the number increases by 2 each hour