For the reaction of ethylamine (CH₃CH₂NH₂) and water.

Part A: Show how the products are formed using the curved arrow notation. Include complete structures of all the reactants and products in your answer and label all the components of the reaction. If there are formal charges present on the product side, show the calculations for those.

Part B: Which acid-base model did you use in your answer? Explain your reasoning (please include as many details as needed to explain your ideas in your answer)