A

In a capillary tube, the height to which a liquid can rise is determined by the balance between adhesive forces (between the liquid and the tube) and gravitational forces acting on the liquid. This height is given by the formula: $$ h = \frac{2\gamma \cos\theta}{\rho g r} $$ where:

• $h$ = height of fluid rise
• $\gamma$ = surface tension of the liquid
• $\theta$ = contact angle
• $\rho$ = density of the liquid
• $g$ = acceleration due to gravity
• $r$ = radius of the capillary tube

When the length of the capillary tube is reduced to less than this height, the tube cannot hold the water due to insufficient gravitational pull and will overflow. Therefore, when the length is less than the height of the liquid column, the water will indeed come out. Hence, the correct answer is Option A.