1. Whcih of following increases the RDA for vitamin c
a smoking cigarettes
b drinking alchol
c being a vagan
d taking supplements of vitamin C
2. which of the following is not a function of vitamin E
a. protecting PUFA in cell membranes from oxidation
b enhancing the immune system and protecting white blood cells
c improving the absorption of vitamin c if dietary intake is low
d protecting LDL oxidation