Cersei took out a $3/1$ hybrid adjustable rate mortgage with $3/1/7$ rate caps. The index is SOFR and the margin is $2\%.$

SOFR equals $4\%$ at loan origination, $5\%$ at the end of the $3^{rd}$ year, and $8\%$ at the end of $4^{th}$ year.

The interest rate for her mortgage equals $\_\%$ in the $6^{th}$ month of the $5^{th}$ year.

A$.10$

B$.9$

C$.8$

D$.7$