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4. Knowing that the risk-free rate is 3%, use the following information to estimate UBN and VIH's stock returns. Assume the factor model was estimated using excess returns. A) UBN's expected return is 12% while VIH's expected return is 10% B) UBN's expected return is 9% while VIH's expected return is 7% C) UBN's expected return is 15% while VIH's expected return is 13% D) UBN's expected return is 13% while VIH's expected return is 11% E) Cannot be computed without additional information