The percentage of households with an annual income of more than $40, 000 is higher in Merton County than in any other county. However, the percentage of households with an annual income of $60, 000 or more is higher in Sommer County. If the statements above are true, which of the following must also be true? ['Average annual household income is higher in Sommer County than in Merton County.', 'The percentage of households with an annual income of $80, 000 is higher in Sommer County than in Merton County.', 'The number of households with an annual income of more than $40, 000 is greater in Merton County than in Sommer County.', 'Some households in Merton County have an annual income between $40, 000 and $60, 000.']