The table below shows some spot rates with different maturities:

Year

Spot rate

$1$

$4\mathrm{.}0\%$ p$.$a$.$

$2$

$4\mathrm{.}2\%$ p$.$a$.$

$3$

$?$

For example, the $2-$year spot rate is $4\mathrm{.}2\%$ p$.$a$.$ In addition, as of today, the $2-$year forward rate between year $1$ and year $3$ is $4\mathrm{.}6\%$ p$.$a$.$ Assume both spot and forward rates are compounded annually.

The $3-$year spot rate is likely to be $\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_.$ Choose the closest answer.