Assume that in a given market the income elasticity of demand for train tickets is negative and equal to -0.2. Thus, if income goes up by 5%, the demand curve for train tickets in this market will: Select one: O a. Shift to the left as train tickets are an inferior good in this market. O b. Shift to the right as train tickets are a normal good in this market. O C. Shift to the right as train tickets are an inferior good in this market. O d. Shift to the left as train tickets are a normal good in this market