Given the following information on two investments, select the most correct or most representative answer.

$>$ Investment A is a tax$-$advantage security with a tax$-$exempt yield of $6\%.$ Investment B is a taxable security with a pretax return of $7\mathrm{.}5\%.$

$>$ The marginal tax rate is $20\%.$

Question options:

Question $1$ options:

a$.$ Investment B has a higher after$-$tax return versus Investment A$.$

b$.$ Investment A and Investment B have identical after$-$tax returns.

c$.$ Investment A has a higher after$-$tax return versus Investment B$.$

d$.$ Investment A is the better quality investment vehicle because it has a tax$-$exempt yield.