It would be product A.
For Product A:
Cost: $1.36
Volume: 8 oz
Cost per ounce = $1.36 / 8 oz ≈ $0.17 per ounce
For Product B:
Cost: $3.20
Volume: 16 oz
Cost per ounce = $3.20 / 16 oz ≈ $0.20 per ounce
Comparing the two, Product A has a lower cost per ounce ($0.17) compared to Product B ($0.20), making Product A the better value.