1 a. Construct the arrow diagram comprising activities A, B, C, M that satisfies the following precedence relationships : (19 marks) A, B and Care the first activities of the project and they can start simultaneously. Activities D, G and H start immediately after B is completed. Activities E and start when both A and D are completed. Activities / and succeed activity H. - Activity K and M succeed activities Cand J. Activity L succeeds activities F, G, I and K. - Activity E. L and M are the terminated jobs of the project. Then, carry out forward and backward analysis to complete the network. Activities A B D E F G Duration (days) 5 10 1 8 3 7 10 Activities I J K L M Duration (days) 9 4 3 5 8 4 b. Construct the following table, and find the critical path. (31 marks) Activities Duration EST EFT LST LFT Total Float Free Float Indep. Float A B D E F G H I J K L M