HELP ASAP!! What is the surface area of a CUBE where the length of each edge is 4 feet?

A) 12 feet
B) 24 feet
C) 64 feet
D) 96 feet

Jody bought 20 shares of amazon at the close price of $121.00. she bought 20 more shares a year later at the price of $127.00. two years later, she sold all of her shares at the price of $133.00. her broker charges $50 for each transaction. after all of these transactions, how much money did jody make?