Which of the following statements is correct pertaining to the isomers of curcumin, the bright yellow plant extract that Marco Polo wrote about in 1280 AD? a. one of the tautomers (the ketone) is lethal if ingested
b. one of the tautomers ) the nol) has anti-oxidant properties
c. neither one of the tautomers have anti-oxidant properties
d. both the keto and enol tautomers have anti-oxidant properties