How do I do this problem? This is how I was doing the problem and don't understand what I was doing wrong.

$20 * 450 = $9000

$15 * 450 = $6750

difference: 2250. This is what I got but its not one of the answers so idk what I did wrong.

Genent Industries, Inc. (GII), developed standard costs for direct material and direct labor. In 2017, GIl estimated the following standard costs for one of their major products, the 30-gallon heavy-duty plastic container. Direct materials Direct labor Budgeted quantity 0.1 pounds 0.4 hours Budgeted price $20 per pound $12 per hour During July, Gil produced and sold 3,000 containers using 450 pounds of direct materials at an average cost per pound of $15 and 1,250 direct manufacturing labor hours at an average wage of $12.50 per hour. July's direct material flexible - budget variance is O A. $3,000 favorable OB. $750 unfavorable O C. $0 OD. $4,500 unfavorable