Brian lives in san diego and loves to eat desserts. he spends his entire weekly allowance on yogurt and pie. a bowl of yogurt is priced at $1.75, and a piece of pumpkin pie is priced at $5.25. at his current consumption point, brian's marginal rate of substitution (mrs) of yogurt for pie is 2. this means that brian is willing to trade two bowls of yogurt per week for one piece of pie per week. does brian's current bundle maximize his utility—in other words, make him as well off as possible