At the beginning of the month, you owned $15,500 of General Motors, $4,500 of Starbucks, and $9,000 of Nike. The monthly returns for General Motors, Starbucks, and Nike were 7.10 percent, -1.36 percent, and -0.54 percent. What is your portfolio return? Multiple Choice 197 percent 2.54 percent 3.42 percent -112 percent