Which of the following statements is/are correct? (i) The endomembrane system includes plasma membrane, ER, Golgi complex, lysosomes and vacuoles. (ii) ER helps in the transport of substances, synthesis of proteins, lipoproteins and glycogen. (iii) Ribosomes are involved in protein synthesis. (iv) Mitochondria help in oxidative phosphorylation and generation of ATR

• A. (ii), (iii) and (iv)
• B.        (i) only
• C. (ii) only             
• D.        (iii) only