Price Elasticity of Supply Requires Quantity Data

Steps:

• Price elasticity of supply (PES) = (% change in quantity supplied) / (% change in price).
• Price rises from $2 to$4: % change = ((4-2)/2) × 100% = 100% (using initial price).
• No quantity supplied data is given for either price level.
• Without quantity change, PES cannot be computed.

Why B is correct:

• Not enough information to confirm; question lacks quantity supplied details needed for the PES formula.

Why the others are wrong:

• A: Insufficient data prevents calculation.
• C: Insufficient data prevents calculation.
• D: Insufficient data prevents calculation.

Final answer: Not enough information.