A driver discloses use of medical marijuana legally prescribed in their state. Under FMCSA regulations, how should the examiner proceed?
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A
Certify if the driver's physician confirms it does not impair driving
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B
Certify for 6 months with quarterly drug testing
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C
Disqualify; marijuana remains a Schedule I substance federally regardless of state law
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D
Require a drug test and certify if negative on DOT urine screen