Determine Mr. J's filing status in each of the following independent cases (taxable year is 2016) :

a. Mr. J and Mrs. J were divorced on November 18th. Mr. J has not remarried and has no dependent children.

b. Mr J and the first Mrs. J were divorced on April 2nd. Mr. J remarried the second Mrs. J on December 15th. He has no dependent children.

c. Mrs. J died on July 3rd. Mr. J has not remarried and has no dependent children.

d. Mrs. J died on October 1, 2014. Mr. J has not remarried and maintains a home for one dependent child.

e. Mrs. J died on May 30, 2015. Mr. J has not remarried and has no dependent children.

f. Mr. J and Mrs. J were divorced on May 30, 2013. Mr. J has not remarried and maintains a home for his two dependent children.