I need help with questions 5 and 6

5. For head of household filing status, which of the following costs are considered in determining whether the taxpayer has contributed more than one half the cost of maintaining the household? Value of services rendered Food consumed in the home by the taxpayer In the home Yes Yes A) No No B) Yes Yes No No 6. Joe and Barb are married but Barb refuses to sign a joint return. On Joe's separate return, an exemption may be claimed for Barb if A) Barb was a full-time student for the entire school year. to be B) Barb attaches a written statement to Joe's income tax return, agreeing claimed as an exemption by Joe C) Barb was under the age of 19 dependent. D) Barb had no gross income and is not claimed as another person's