Suppose that the demand for good X is given by the following log-linear demand function: In(Qx)= 500 - .41In(Px) - 0.33In(Py) + 0.75In(Pz) - In(M) where Y and Z are related goods in consumption for good X and M denotes the average consumer's income. Based on this information, we can infer that goods X and Z are ___ while good X is substitutes; normal complements; normal O complements; inferior substitutes; inferior