Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to install a cartridge box sling (reenacting ) [title] Lay the cartridge box on its back. [step] Place the sling above it, with the breast-plate on the right side of the sling. [title] Flip the sling and cartridge box over.

Ending1: [step] Now this is where you will place your camera head. [title] Place your camera head with the eye-plate facing upwards. Ending2: [step] Make sure that you flip both in the same direction. [title] With the rough side of the sling facing up and away from the overturned cartridge box, feed the right end of the sling though the right sling loop. Ending3: [step] Gently slide the cartridge box back onto its front side. [title] Clear the plate with a tool (a shetland broom). Ending4: [step] In this step, place a single piece of jumper wire underneath the shield. [title] Now slide the wire under the shield until the shield is nestled into the sling's rim.

Answer format: ending1/ending2/ending3/ending4