Scenario 13-10 Walter Builds Birdhouses. He Spends $5 on the Materials for Materials

Multiple Choice

Scenario 13-10
Walter builds birdhouses. He spends $5 on the materials for each birdhouse. He can build one in 30 minutes. He is semi-retired but earns $8 per hour at the local hardware store. He can sell a birdhouse for $20 each.
-Refer to Scenario 13-10.An economist would calculate the total profit for one birdhouse to be

A) $7.
B) $11.
C) $12.
D) $15.