Pokemon Company is headed by Ms. Kinton, President, and she is receiving $500,000 gross monthly salary. The company also employs 2 office supervisors and 10 staffs. The gross monthly compensation for every supervisor is $30,000 and for every staff is $15,000. The President receives her net pay every end of the month. In 2021, what is the amount of SSS monthly contributions to be remitted?

$10,125

$29,640

$5,625

$19,515