Luxury hotels find that when there is a recession and consumers experience a loss of income, there is a significant drop in their bookings. Which of the following must be true for their services? Cross price elasticity of demand (Ecp) is positive and greater than 1 Income elasticity of demand (Ei) is negative Income elasticity of demand (Ei) is positive and greater than one Income elasticity of demand (Ei) is positive but less than one