IX. Assume that in Problem 5, Mario, an RSC member disgusted with the non-payment of his night shift differential and overtime pay, filed a complaint with the DOLE Regional Office against RSC and PizCorp. After inspection, it was found that indeed Mario was not getting his correct differential and overtime pay and that he was declared an SSS member (so that no premiums for SSS membership were ever remitted). On this basis, the Regional Director issued a compliance order holding PizCorp and RSC solidarily liable for the payment of the correct differential and overtime pay and ordering PizCorp to report Mario for membership with SSS and remit overdue SSS premiums. Who has the obligation to report the RSC members for membership with the SSS, with the concomitant obligation to remit SSS premiums? Why? (6%)