Question $9(1$ point$)$: Paul buys a bond for $$10,000$ and receives $$12,500$ a year later.

Paul's tax rate is $25\%.$ The inflation rate is $10\%.$ What is his after tax real rate of return:

a$.6\mathrm{.}0\%$

b$.7\mathrm{.}95\%$

c$.8\mathrm{.}75\%$

d$.15\mathrm{.}0\%$

e$.25\mathrm{.}0\%$