Insufficient information to match options Steps:

• Calculate Amu's labor: 10 hours × $25/hour =$250.
• Calculate assistant's labor: 100 hours × $70/hour =$7,000.
• Total labor cost: $250 +$7,000 = $7,250.
• Apply 20% markup to labor: $7,250 × 1.20 =$8,700.
• Add materials: $8,700 +$1,000 = $9,700 (does not match any choice; rates may be ambiguous or misstated). Not enough information.

Final answer: Not enough information.