Question $4(6$ points$)$

A level is set midway between A and B $($from A to B is $200$ ft $.)$ the rod reading is

$4\mathrm{.}52$ feet to A and $6\mathrm{.}31$ feet to B respectively. When the level is set $10$ feet off of

A $,$ the rod reading is $5\mathrm{.}03$ feet to A and $6\mathrm{.}80$ feet to B The line of sight is:

a$)$ declined $0\mathrm{.}02$ feet in $100$ feet

b$)$ declined $0\mathrm{.}01$ feet in $100$ feet

c$)$ inclined $0\mathrm{.}02$ feet in $100$ feet

d$)$ inclined $0\mathrm{.}01$ feet in $100$ feet