The level of the Syldavia market index is $21,500$ at the start of the year and $26,000$ at the end. The dividend yield on the index is $4\mathrm{.}6\%.$

a$.$ What is the return on the index over the year?

b$.$ If the interest rate is $7\%,$ what is the risk premium over the year?

c$.$ If the inflation rate is $9\%,$ what is the real return on the index over the year?

Note: For all requirements, do not round intermediate calculations and enter your answers as a percent rounded to $2$

decimal places.