Assuming ideal solution behavior, what is the osmotic pressure of a solution of bovine insulin (molar mass, 5700 g mol−1) at 18 °C if 100.0 mL of the solution contains 0.103 g of the insulin? A) 2.5 × 10−3 atm B) 1.3 atm C) 6.4 atm D) 4.7 × 10−5 atm