From the following data regarding individual demand schedules of households A, B and market demand schedule, prepare the demand schedule of household C, assuming that there are only three households in the market
`{:("Price Rs.",underset(bar("A B C"))("Individual Demand (units)"),"Market demand (units)"),(" 7","20 16 "-," 51"),(" 8","18 15 "-," 46"),(" 9","16 12 "-," 39"),(" 10","13 10 "-," 32"):}`