You buy a $10-$year $$5000$ bond, redeemable at

par, with semi$-$annual coupons at j$2=6\%.$ The

bond is bought to yield j$2=6\%.$ Two years

later, you decide to sell the bond. What rate of

return do you earn for the $2$ years that you

owned the bond if$,$ after the $2-$year period, yield

rates have

$($a$)$ Remained at j$2=6\%$

$($b$)$ Decreased to j$2=5\%$

$($c$)$ Increased to j$2=7\%$