I’m guessing the answer is AX (the first one) sorry if I am wrong tho
Monosaccharides are the simplest carbohydrates. Although glucose and fructose have the same molecular formula they have different structures. They cannot be further hydrolyzed to simple sugars. Disaccharides contains two monosaccharides. For example, lactose and sucrose. Polysaccharides on the other hand contains a large number of saccharides. An example is starch, glycogen and dextrans. Amino acids contains an amino acid, carboxyl group and an R-group. Whatever the diagram you have, you just look at the structures contained.
Answer : The molar solubility of 
is 
Explanation :
The solubility equilibrium reaction will be:
The expression for solubility constant for this reaction will be,
Let the molar solubility be, 'x'
Now put all the given values in this expression, we get:
Therefore, the molar solubility of is
