In forms filed with the Securities and Exchange Commission, the companies disclosed that Fannie Mae CEO Timothy Mayopoulos and Freddie Mac CEO Donald Layton will get annual base salaries of $US750,000 each, $US2.1 million in fixed deferred compensation and $US1.2 million in at-risk deferred salary.
In the context of the input sentence, determine the relationship between 'Fannie Mae' and 'Timothy Mayopoulos'.
Options: creator, employer, distribution format, chief executive officer