Find the cell phone plan that has the best dollar per minute rate.
A) 240 minutes for $50 a month
B) 140 minutes for $70 a month
C) 200 minutes for $45 a month
D) 800 minutes for $250 a month
A) 240 minutes for $50 a month
B) 140 minutes for $70 a month
C) 200 minutes for $45 a month
D) 800 minutes for $250 a month