So always 300 seconds?

Part A:
5 MIN AMRAP
12 C&J at 185/135
36 WBs
72 DU

Rest 3 minutes

Part B:
2:30 mins on 1:30 minute off
x 2
AMRAP and pick up where you left off
8 C&J at 185/135
24 WBS
48 DU

Rest 3 mins

Part C:
1:40 mins on 1:00 minute off
x 3

AMRAP and pick up where you left off
6 C&J at 185/135
18 WBS
36 DU