Subsidy Type from Supply Curve Shift Steps:

• Identify that subsidies shift the supply curve rightward, increasing quantity supplied at each price.
• Note that the shift's shape (parallel or pivoting) reveals if the subsidy is fixed per unit or percentage-based.
• For fixed-sum subsidies, the shift is parallel, adding a constant amount to supply at all prices.
• Without the diagram, the exact shift pattern (parallel vs. non-parallel) cannot be determined to distinguish subsidy types.

Why B is correct:

• Not enough information; the diagram is needed to confirm if the shift matches a fixed sum or percentage subsidy.

Why the others are wrong:

• A: Diagram absent, so cannot verify falling percentage effect on shift.
• C: Diagram absent, so cannot verify rising percentage effect on shift.
• D: Diagram absent, so cannot verify fixed-sum per unit parallel shift.

Final answer: Not enough information.