Which of the following would disqualify a taxpayer from getting the joint custody head of household credit in California? Assume the taxpayer does not use the married/RDP filing jointly status. a. The taxpayer is unmarried at the end of the tax year. b. The taxpayer was married at the end of the tax year. c. The taxpayer covers over half of the home expenses for the tax year. d. The child being support by the taxpayer is married