as $(10$ marks$)$ Select the most correct answer for the following:

The lowest elevation of a $58km$ mainstream channel is $53m$ below sea level. The watershed slope is $0\mathrm{.}46\%.$ What is the highest elevation of the mainstream channel $($from sea level$)?$

a$)186\mathrm{.}2m$

b$)204\mathrm{.}6m$

c$)195\mathrm{.}4m$

d$)213\mathrm{.}8m$

e$)25707m$

f$)23867m$

g$)24787m$

k$)26627m$