The figure given below shows the production possibilities frontier for education and food. In The opportunity cost of moving from point c to point b is _____. 
Definitions:
Annuity Payment
An annuity payment is a periodic payment received from an annuity contract, typically used as an income stream during retirement.
Annuity Contract
A financial product sold by insurance companies that provides regular payments to the holder for a fixed period or for life in exchange for an initial payment.
Expected Return
The anticipated amount of profit or loss an investment is likely to generate over a specific period.
AGI
Adjusted Gross Income (AGI) is an individual's total gross income minus specific deductions. It is an important figure for calculating taxable income on the federal income tax return.
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