Find the Absolute Maximum and Absolute Minimum Values, If Any $f(x)=x-\sqrt{x}$

Multiple Choice

Find the absolute maximum and absolute minimum values, if any, of the function $f(x) =x-\sqrt{x}$ on [0, 25]

A) Abs. max. $f(25) =20$
Abs) min. $f\left(\frac{1}{4}\right) =-\frac{1}{4}$
B) Abs. max. $f(25) =20$
Abs) min. $f(0) =0$
C) Abs. max. $f(25) =20$
Abs) min. $f(0) =f(1) =0$
D) Abs. max. $f(0) =0$
Abs) min. $f\left(\frac{1}{4}\right) =-\frac{1}{4}$