$$Given a starting benchmark elevation of $250\mathrm{.}00\text{'},$ a recorded backsight reading of $5\mathrm{.}00\text{'},$ and a recorded foresight reading of $10\mathrm{.}00\text{'}$ on the location of a turning point, the height of the leveling instrument is $\_\_\_\_\_.$

Group of answer choices

$255\mathrm{.}00\text{'}$

$265\mathrm{.}00\text{'}$

$255\mathrm{.}00\text{'}$

$245\mathrm{.}00\text{'}$