John manages a pension fund and has a long time until the fund will need to pay benefits to retirees. As such, he prefers long-term debt. In order to entice him to instead purchase short-term debt, there must be a strong financial incentive for him to justify the change. This mindset best illustrated which theory?

A. Market Segmentation Theory

B. Liquidity Preference Theory

C. Unbiased Expectations Theory

D. All of the above