Whitlock & Daily Corporation has $$350,000$ that it wants to invest. It is choosing between Google

corporate bonds that yield $8\mathrm{.}70$ percent, state of Texas municipal bonds that yield $5\mathrm{.}72$ percent, and

AT&T preferred stock with a dividend yield of $6\mathrm{.}90$ percent. The corporation$$s tax rate is $35$ percent.

Which security would have had the highest after$-$tax yield using the $2017$ tax rules?

a$.$ Google corporate bonds with an ATY of $5\mathrm{.}66$ percent.

b$.$ AT&T preferred stock with an ATY of $4\mathrm{.}49$ percent.

c$.$ Google corporate bonds with an ATY of $7\mathrm{.}79$ percent.

d$.$ AT&T preferred stock with an ATY of $6\mathrm{.}18$ percent.

e$.$ State of Texas municipal bonds with an ATY of $5\mathrm{.}72$ percent.