The following structure represents

 

detailed solution

Correct option is A

In the Haworth structure of α-D- glucose- at C-1..-H on top and -OH at bottom ; at C-4..-H on top and -OH at bottom ;In the Haworth structure of β-D- glucose- at C-1..-OH on top and -H at bottom ; at C-4..-H on top and -OH at bottom ;In the Haworth structure of α-D- galactose- at C-1..-H on top and -OH at bottom ; at C-4..-OH on top and -H at bottom ;In the Haworth structure of β-D- galactose- at C-1..-OH on top and -H at bottom ; at C-4..-OH on top and -H at bottom ;