Choose the CORRECT answer from the following statements

a. Only a medical practitioner or district surgeon or registered nurse may extract a blood sample

b. A police officer may not ascertain any mark, characteristic or other distinguishing feature of the suspect

c. Only the investigating officer, and not the court, has the power to order the taking of blood samples, fingerprints or the ascertainment
d. A person's handwriting is an extension of their bodily creation, and can therefore, be described as a bodily feature or characteristic

e. A police officer has the power to extract a blood sample