Consider the following project network, with task duration data provided: Which of the following are true statements, concerning tasks pictured in this diagram? I. Task D could be started immediately, even if no other work has been done on any other tasks. II. Task B cannot start until both tasks A and D are completed. III. Task J cannot start until both tasks E and I are completed. a. III only b. II and III c. I and II d. I only e. I, II and