Disinflation vs. Deflation in CPI Changes

Steps:

• Calculate annual inflation rate: ((Current CPI - Previous CPI) / Previous CPI) × 100%.
• Deflation occurs if rate < 0% (prices fall).
• Disinflation occurs if rate > 0% but lower than prior year's rate (slowing positive inflation).
• Data only provided up to 2017; 2018–2019 values missing, preventing full analysis.

Why D is correct:

• Not enough information: 2019 CPI unavailable to verify positive but slowing inflation vs. 2018.

Why the others are wrong:

• A: 2016 rate = -2% (deflation, not disinflation).
• B: 2017 rate ≈ +3.1% (shift from deflation to inflation, not disinflation).
• C: 2018 CPI missing (cannot assess).

Final answer: Not enough information.