Please Explain this multiple part question regarding utility function

Let's say Aaron gets utility from pretorming the Violin [V] and Boxing (B), according to the following utility function urine) 2 Wm + 32:3 {a} Show that Aaron's marginal utility from pretorming the violin is not a function of Boxing. (b) Explain why the utilitymaximizing point for Aaron's preferences do not involve a combination between the two , but only one. Hint: no calculation needed, graphs might help [c] Given these preferences. do you believe that Aaron's priceelasticity of demand for violin is elastic, inelastic. or unitelastic? Explain. (d) Let's say the price of boxing goes up. Will the crossprice elasticity of demand for violin be positive or negative? Explain. (e) Suppose that Aaron's [A] income goes up. and his quantity demanded of boxing goes up more than proportionally. in addition to boxing being a normal good for Aaron, what else are they