Question

PLEASE HELP AND EXPLAIN!!!

At the grocery store watermelon costs $1.27 per pound. If Heather buys a 5.5 lb watermelon, which proportion could she use to find out how much it will cost, c?
A) 1.27/ 1 = 5.5/ c
B) 5.5 /1.27 = 1 /c
C) 1./27 5.5 = 1 /c
D) 1/1.27 = 5.5 /c

Answer 1

B is the answer for the question 

Answer 2

It should be A. Correct me if I'm wrong