tho Occupational Safoty and Hoalth Administration $($OSHA$)$ standard for evaluating the CHP$?$

A$.$ Although there are no hazardous substancos prosent, our CHP is reviowed and evaluated every $6$ months or with the addition of now laboratory porsonnel.

B$.$ Since our laboratory personnel are dealing with particularly hazardous substances, the CHP is evaluated annually.

C$.$ Sinco we have a small microblological labaratory with small number of laboratory personnel, our CHP is evaluated on oven numbered yoars.

D$.$ Since our laboratory personnel are doaling with particularly hazardous substances, the CHP is evaluated every $9$ months.