Select the correct month.
Listed are the quantities of green grapes Martha bought for four months and the amount that she spent on them. In May, she bought 2 pounds
of grapes for $5.40, in which month was the unit price the same as it was in May?
January
2 pounds
for $7.40
February
4 pounds
for $10.80
March
5 pounds
for $11.65
April
3 pounds
for $7.50