Weiner's Hot Dog Stand Sells Hot Dogs for $2

Weiner's Hot Dog Stand sells hot dogs for $2.50 each. The variable cost per hot dog is $1.75 and fixed costs per month are $1,800. If Weiner's fixed cost per month was to increase to $2,880, to what level would he have to reduce his variable cost per hot dog in order to maintain the current break-even point in units?

A) $1.20
B) $1.30
C) $1.40
D) $1.50
E) $1.60