Which of the following is not a requirement that must be satisfied in order for a legally married taxpayer to use the head of household filing status?

-1- The taxpayer must file a separate tax return from the spouse.

-2- The taxpayer must furnish over one-half of the cost of maintaining the household.

-3- The spouse must not be a member of the household during the last six months of the tax year.

-4- The taxpayer must be legally separated from the spouse.

2 only.

4 only.

3 and 4.

1, 2, and 3.