Question

Which of the following units are present in α-(+)- lactose? Select the proper choice from the given choices.
(A) β(D)-(+)-galactose + α-D-(+)-glucose
(B) β-(D)-(+)-galactose + β-D-(+)-glucose
(C) α-(D)-(+)-galactose + α-D-(+)-glucose
(D) α-(D)-(+)-galactose + β-D-(+)-glucose

Answer 1

option (B) beta -D-(+) galactose +beta-D-(+) glucose