Is a policeman permitted to require an electric bicycle rider to undergo a blood test to check whether he is under the influence of alcohol or drugs?

1. A No. A policeman is not permitted to require a test without a court order.
2. B No. A policeman is not permitted to require any test whatsoever under any circumstances.
3. C Yes. A policeman is permitted to require a blood test if he has reasonable grounds for suspicion that the rider is under the influence of alcohol or drugs.
4. D No. A policeman is not permitted to require a blood test to determine the amount of alcohol or drugs in his blood.