Please choose the correct ending to complete the given sentence: Finance and Business: [header] How to say no to a child and mean it [title] Say " no " in a clear, firm tone. [step] Start by saying " no " in a tone that is clear, firm, and in control. Raise your voice so the child can hear you but do not yell or scream when you say " no.

Ending1: " [substeps] Yelling or shouting can come across as mean. This can reduce the child's emotional feelings and expose the child to the positive consequences of your refusal. Ending2: " put your hands on your hips or form your fingers into a fist or curl your fingers. As you speak, raise your hand, palm upward, and flick your lower fingers towards the ceiling or another clear location that it's safe for the child to see. Ending3: " yelling and screaming can teach the child that shouting and raising your voice is okay, especially when you say " no. " rather, you should appear calm, collected, and assertive to the child when you say " no. Ending4: " [title] Set clear boundaries and enforce them. [step] Boundaries are important or cause unnecessary aggression.

Answer format: ending1/ending2/ending3/ending4