A cistern 8 m long and 6 m wide contains water up to a breadth of 1 m 85 cm. Find the total area of the wet surface. Choose the correct answer:
A) 102 m sqaure  B) 100 m sqaure  C) 152 m sqaure  D) 164 m sqaure  E) none of these

Rationale: "explanation : area of the wet surface = 2 [ lb + bh + hl ] - lb = 2 [ bh + hl ] + lb = 2 [ ( 6 * 1.85 + 8 * 1.85 ) ] + 8 * 6 = 100 m square option b"
Answer: B