Hi, I need help with answers that has red X next to it. They are wrong

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Product A Product B Total sales volume (units) 270 150 $4,500 $27,000 $31,500 Variable costs direct mat direct labor $1,800 $2,700 $18,900 $3,600 Profit a) Allocate the fixed costs between products A and B. Use direct labor dollars as the cost driver. allocation rate-$ 3 allocated costs for A-$ 5400 allocated costs for B-$ 13500 per DL$ b) Compute the profit margins for products A and B: profit margin for A- -8 profit margin for B=$ -26.67% Enter negative numbers with a minus sign, i.e., a loss of $1,000 should be entered as-1000, not as (1000) or ($1000). c) Should you drop product A or product B in the short term? Why? O Keep both products--both have positive contribution margin O Drop product A -- it has negative profit margin Drop product A-- it has negative contribution margin Drop product A-- it has smaller contribution margin than product B