Concept:To compare the quantities, find the shaded area by subtracting the inner rectangle's area from the outer rectangle's area.Explanation:The outer rectangle has length 10cm and breadth 8cm.The inner rectangle is formed by reducing each dimension by 4cm (i.e., 2cm border on each side).So, inner length =10−4=6cm.Inner breadth =8−4=4cm.Area of shaded portion =(10×8)−(6×4).=80−24=56cm2.Column B is also 56cm2.Hence, Column A is equal to Column B.Answer:Both quantities are equal.So, the correct option is C.