1. A student synthesized Vitamin C and got a pair of enantiomers (d- and I-ascorbic acid). The specific optical of the synthesized Vitamin C is +10°. What is the percentage of I-ascorbic acid in the synthesized Vitamin C, given that the specific rotation of I -ascorbic acid: +20°? (A) 100% (B) 25% (C)50% (D)75% (E)0%