Q. If A is the area of the immersed surface, w is the specific weight of the liquid and ͞x is the depth of horizontal surface from the liquid surface, then the total pressure P on the surface is given by

• (A) p = wA2 ͞x
• (B) p = w2A ͞x
• (C) p = wA ͞x
• (D) p = wA ͞x2