Cleans or Back Squats?

Weightlifting

Every 90 seconds, for 15 minutes (10 sets):
Hang Clean + Clean

Or 

Every 90 seconds, for 15 minutes (10 sets):
Back Squat x 2 reps @40X1

Metcon

Every 90 seconds, for 18 minutes, (4 sets) of:
Station 1 – 300 Meter Run

Station 2 – 20 Kettlebell Swings (24/16 kg)
Station 3 – 10 Pull-Ups