Naturally occuring (+)- sucrose
A. `alpha-D-`glucopyronoside-`beta-D-`fructofuranoside
B. `alpha-D-`glucopyronoside`-alpha-D-`fructofuranoside
C. `beta-D-`glucopyronoside`-alpha-D-`fructofuranoside
D. `beta-D-`glucopyronoside`-beta-D-`fructofuranoside