In a Nucleoside, the Pentose Sugar Is in Its _____ $\alpha$

Multiple Choice

In a nucleoside, the pentose sugar is in its _____ form, and the ring is _____.

A) $\alpha$ -furanose; planar
B) $\alpha$ -pyranose; puckered
C) $\beta$ -furanose; planar
D) $\beta$ -furanose; puckered
E) $\beta$ -pyranose; planar