As a bond trader at Goldman Sachs, you predict that the FOMC will lower the key interest rate in the upcoming meeting on Wednesday. Currently $($on Friday$),$ the price of Treasury A is $$1,000,$ the price of Treasury B is $$1,000,$ and the price of Treasury C is $$1,000,$ respectively. According to your calculations, Treasury A has a duration of $3\mathrm{.}5,$ Treasury B has a duration of $4,$ and Treasury C has a duration of $5.$ To maximize the return between now and Wednesday, which Treasury would you choose to buy or short $($i$.$e$.,$ do short$-$selling$)?$ Why?

FOMC $($Federal Open Market Committee$)$ is the branch of the U$.$S$.$ Federal Reserve $($the central bank$)$ that determines the course of monetary policy. FOMC announcements inform everyone about the US Federal Reserve's decision on interest rates and are one of the most anticipated events on the economic calendar.