Roots and Radicals
Read the problem carefully. Note that an integer is a whole number, not a fraction.
Identify the bottom line. Least potential value of x = ?
Assess your options. You could plug in each of the answer choices and find the smallest choice that results in an integer, but there is a much quicker way to solve this type of problem.
Attack the problem.
Loop back. Did you solve for the bottom line? Yes.
The correct answer is D.
This is a medium-level problem.