AR-15 for deer hunting. Which round is the BEST??? 100 yard gel test, 5.56 and .223!!

We had a customer ask the question today. What is the best round for my AR to take a deer with? My response. Let's find out!! Range: 100 yards Gel: 10% Clear Ballistics Gun: Complete PSA PA-15 upper and lower. 16'' barrel. Silencer: AB A10 5.56 Scope: Leupold VX freedom 3-9x40 Ammo: .223 Federal 64gr jacketed soft point (223L) .223 Winchester 64gr Deer season XP (X223DS) .223 Barnes 55gr TSX FB (BB223R2) 5.56 Hornady Black 75gr Interlock (81296) 5.56 Hornady Superformance 75gr BTHP (81264) 5.56 AAC 77gr OTM (AAC556OTM1-20)