Which Type of Proteins Are Involved in Nutrient Transport Across

Which type of proteins are involved in nutrient transport across the plasma membrane and why?

A) integral proteins, because they span the membrane and are able to carry nutrients across the membrane
B) peripheral proteins, because they are smaller and can travel across the membrane, thereby carrying nutrients across the membrane
C) integral proteins, because they are smaller and can travel across the membrane, thereby carrying nutrients across the membrane
D) peripheral proteins, because they span the membrane and are able to carry nutrients across the membrane
E) receptor proteins, because their carbohydrate chains bind to nutrients and carry them across the membrane