Which of the following statements about vesicle budding from the Golgi is false
(a) COPII can initiate vesicle budding on the Golgi membrane
(b) Some vesicles budded from Golgi membranes move towards ER
(c) Once vesicle budding is completed, clathrin molecules are released from the vesicle
(d) Clathrin molecules act at the cytosolic surface of the Golgi membrane.