HELP!!

Carmen went to a festival to sell homemade cotton candy. At the festival they sold cotton candy in various flavors. There are a total of 150 cotton candy packages to sell. 1/3 of the packages contained green apple and strawberry. 1/2 of the packages contained blue raspberry swirl cotton candy. The rest contained bubblegum swirled cotton candy. How many packages contained bubble gum swirled cotton candy?

A. 150
B. 50
C. 75
D. 25