Activity A Starts the project Activities B and C can be executed at the same time after completion of A Activity D can be started when Activities B and C are finished Activity D is the last activity For the above Activity description, which of the following networks is correct? Select one or more: 1. A C D B Dummy activity J. A B a Do Dummy activity B D OA, Dummy activity C 5. A 0 Dummy activity B. 6. C D Dummy activity B