When an oxidant is present, vitamin C can be converted to a product described as (5R)-5-[(15)-1,2-dihydroxyethyl]-3,4-dihydroxyfuran-2,3,4(5H)-trione, which retains the furan-based nomenclature of vitamin C and describes the hydrogen placement at atom 5 of the ring. Which of the following statements best describes this vitamin C derivative? Vitamin C is reduced to yield a furan ring with 1 carbonyl group and no double bonds. Vitamin C is oxidized to yield a furan ring with 3 carbonyl groups and 1 double bond. Vitamin C is reduced to yield a furan ring with 4 carbonyl groups and no double bonds. Vitamin C is oxidized to yield a furan ring with 3 carbonyl groups and no double bonds