AP Macroeconomics

Answer - B - Opportunity-pull is not a type of inflation.

Key Takeaway: According to the Triangle Model, there are three types of inflation: built-in, demand-pull, and cost-push. Increased individual and government spending leads to demand-pull inflation, while an overall reduction in materials and goods supplies leads to cost-push inflation. Built-in inflation is caused by workers increasing their wages with prices that are passed on to the consumers by producers.