The normal time the free float on Activity 4-6 and the project duration, respectively, are

Question

Consider the given project network, where numbers along various activities represent the normal time the free float on Activity 4-6 and the project duration, respectively, are

      (a) 2, 13                                                              (b) 0, 13

      (c) –2, 13                                                            (d)  2, 12