For a vessel with oil-lubricated tailshaft bearings to qualify for the exemption from drawing the tailshaft for examination, which of the following conditions must be met regarding lubricant analysis?

1. A. Oil samples must be sent to a USCG-approved laboratory annually.
2. ✓ An analysis of the tailshaft bearing lubricant must be performed semiannually to determine bearing material content or the presence of other contaminants.Correct
3. C. Oil viscosity must be checked monthly and recorded in the vessel's log.
4. D. A full spectrographic analysis must be performed at each drydock examination.