An applicant for a master of ocean self-propelled vessels of less than 200 GRT endorsement must have how many years of total service on ocean or near-coastal waters under the standard service pathway?

Why D is correct

46 CFR §11.424(a)(1) requires 3 years of total service on ocean or near-coastal waters, of which 2 years must have been as master, mate, or equivalent position while holding the appropriate license or MMC endorsement. Service on Great Lakes and inland waters may substitute for up to 18 months of the required service.