Your eyeball is 2.10 cm from the cornea to the retina. You look at a sign on the freeway that is effectively an infinite distance away. The image for the sign is 1.96 cm from the cornea within the eye. Which answer below is closest to the focal length of the cornea-lens system?
$\begin{array}{llll}{\text { (a) }+1.96 \mathrm{cm}} & {\text { (b) }+2.10 \mathrm{cm}} & {\text { (c) }+2.26 \mathrm{cm}}\end{array}$ (d) $+2.42 \mathrm{cm} \quad(\mathrm{e})+27.90 \mathrm{cm}$