Under the Retirement Pay Law (RA 7641), in the absence of a retirement plan, a private-sector employee may retire upon reaching age 60 if he or she has served the employer for at least:

The correct answer is B. Five years

RA 7641 entitles employees aged 60 to 65 with at least five years of service to retirement pay of at least one-half month's salary for every year of service. Government employees retire under the GSIS law instead.