ackbird Entertainment Company is planning an event to expose its artistes to the g blic. It has identified the following main activities. Activity Description Preceding Duration Activities (Weeks) A Sign up artistes None 3 B Book venue A 1 C Obtain sponsorship A 4 D Design advertising materials A E Print Tickets C. D 4 F Sell Tickets B G Place advertising D H Pay for venue E N I Hold event G. H Draw a network diagram to represent the above activities inclusive of their dura [11 n Calculate the duration of the project. [4 n