A survey of 121 high school students determined whether they used Instagram, Twitter, or Facebook. The provided information was determined.

74 used Instagram.	62 used Twitter.
78 used Facebook.	38 used Instagram and Twitter.
45 used Instagram and Facebook.	38 used Twitter and Facebook.
23 had all three features.

A.) How many of the students surveyed used only Instagram?

B.) How many of the students surveyed used Instagram and Twitter, but not Facebook?

C.) How many of the students surveyed used Instagram or Twitter?

D.) How many of the students used Instagram or Twitter, but not Facebook?

E.) How many of the students surveyed used exactly two of the social medias?