The following table summarizes prices of various default$-$free zero$-$coupon bonds $($expressed as a percentage of the face value$)$:

a$.$ Compute the yield to maturity for each bond.

b$.$ Plot the zero$-$coupon yield curve $($for the first five years$).$

c$.$ Is the yield curve upward sloping, downward sloping, or flat?

Data table

$($Click on the following icon in order to copy its contents into a spreadsheet.$)$

$\backslash$table$[[$Maturity $($years$),1,2,3,4,5$