2 (a) Describe the difference between PRIMARY manufacturing and SECONDARY manufacturing in the following areas: i. ii. type of products manufactured environmental standards for manufacturing (2 marks) (2 marks) (b) Explain the 4C's practised as part of current Good Manufacturing Practice (CGMP) to prevent cross- contamination. (4 marks) Briefly describe the FOUR phases of clinical trials with respect to the objective of EACH specified phase of the clinical trial. (4 marks)