Step 1: Understanding the pressure in a liquid.
The pressure at a depth in a liquid is given by the equation:
\[
P = \rho g h
\]
where \( \rho \) is the density of the liquid, \( g \) is the acceleration due to gravity, and \( h \) is the height of the liquid column. The pressure depends only on the density of the liquid, the height of the liquid column, and gravity.
Step 2: Conclusion.
Thus, the pressure at the bottom of a tank does not depend on the area of the bottom surface, corresponding to option (A).