Alpha and Beta Companies can borrow for a five$-$year term at the following rates:

Alpha Beta

Moody$$s credit rating Aa Baa

Fixed$-$rate borrowing cost $10\mathrm{.}1\%11\mathrm{.}6\%$

Floating$-$rate borrowing cost LIBOR LIBOR $+1\%$

Calculate the quality spread differential $($QSD$)($if your answer is $10\mathrm{.}1\%,$ just enter $"10\mathrm{.}1").$