Determine Ms. 's filing status in each of the following independent cases:

a) Ms. A and Mr. Z have been living together since 2013. They were married on Decemeber 13, 2015

b) Ms. A married Mr. P in 2008. They were divorced on November 8, 2015.

c) Ms. A married Mr.P in 2008. they separated in 2014 and have not lived together since, but have not divorced

d) Ms. A divorced Mr. P in 2015. she maintains a home for herself and her dependent grandmother