Paney Company makes calendars. Information on cost per unit is as follows: Direct materials $1.50 Direct labor 1.20 Variable overhead 0.90 Variable marketing expense 0.40 Fixed marketing expense totaled $13,000 and fixed administrative expense totaled $35,000. The price per calendar is $10. What is the contribution margin per unit? a.$5.00 b.$6.00 c.$5.40 d.$6.40 e.$6.30