how would i determine how to calculate the increase in unit contribution margin?

Q 5.35: Rainbow Toys has a target net income of $25,000 and xed costs of $7,550. If they currently sell 12,000 units with a unit contribution margin of $2.50, by how much do they need to increase the unit contribution margin to meet their target net income? (70 They need to increase the unit contribution margin by $1.45. a) I . They need to increase the unit contribution margin by $0.08. n) They need to increase the unit contribution margin by $0.21. A . D They need to increase the unit contribution margin by $2.71