The expected return on the market portfolio is 18%. The risk free rate is 8%. The expected return on SDA Corp.common stock is 15%. The beta of SDA Corp.common stock is 1.15. Within the context of the capital asset pricing model SDA Corp, stock's alpha is -4,5% and overpriced. SDA Corp.stock's alpha is 4.5% and underpriced. SDA Corp, stock's alpha is 4.5% and overpriced. SDA Corp, stock's alpha is 4.5% and underpriced