Answer: 2-year rate will affect the 20-year rate

## Explanation Key rate duration analysis assumes that: - **Adjacent key rates affect each other** (A and C are correct assumptions) - **Non-adjacent key rates do NOT directly affect each other** (D is the exception) **Detailed reasoning:** - **Option A (2-year affects 5-year)**: ✓ Correct assumption - adjacent key rates influence each other - **Option B (7-year affects 20-year)**: ✓ Correct assumption - adjacent key rates influence each other - **Option C (5-year affects 7-year)**: ✓ Correct assumption - adjacent key rates influence each other - **Option D (2-year affects 20-year)**: ✗ **INCORRECT assumption** - non-adjacent key rates (2-year and 20-year) are too far apart to directly affect each other in key rate duration analysis **Key Rate Duration Concept:** Key rate duration measures the sensitivity of a bond's price to changes in specific benchmark rates along the yield curve. The methodology assumes that rate changes primarily affect adjacent key rates, not distant ones. The 2-year and 20-year rates are too far apart on the yield curve to have direct influence on each other in this framework.

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