please answer with correct option.

The construction network plan for a unit is given in Fig below. Table 1 gives the man-hours required and team size for each operation. Prepare a line of balance schedule for a contract of 40 houses using a target rate of build 8 houses per week. Assume a minimum buffer time of 4 days between operations and operation is performed as 5 days per week and 9 hours a day HINT: Increase the Actual gang sizes to the nearest upper multiple values Man Men per hours oparation OPERATION (M) (9) A 60 3 B 55 4 C 30 3 28 2 mo 60 2 F 34 3 4 00 4. C E D 1. What is the overall duration of the project? 039 O52 033 042 044 039 2. When the house number 21 will be completed? (choose the last activity's start and end days) 027-29 36-38 023-27 21-23 29-31 28-30 2. When the house number 19 will be completed? (choose the last activity's start and end days) 027-29 36-38 23-27 021-23 29-31 28-30