Please explain the solution of all parts ofthe following question

Question- You are negotiating a new labor contract with union officials. The contract covers a plant that has experienced operating losses over the past several years. You want to negotiate concessions from labor to reduce the losses. However, labor is refusing any compromises. You could tell them that, without concessions, the plant will be closed, although that is not true.

Part 1- Is bluffing ethical?

Part 2- Under what circumstances?

Part 3- What would Kant and Mill say?

Part 4- What result under the Front Page test?

Part 5- What is your Life Principle?

I need assist to explore the answer of the above question.