Find the area of the quadrilateral of one of its diagonals is 15 cm and its off sets 6 cm and 4 cm?	Choose the correct answer.
A) 50 cm 2 B) 60 cm 2 C) 75 cm 2 D) 90 cm 2 E) 150 cm 2

Rationale: "1 / 2 * 15 ( 6 + 4 ) = 75 cm 2 answer : c"
Answer: C