Evaluate the conditions necessary for mutarotation to occur in a solution.

Mutarotation occurs in the presence of free anomeric carbons in solution, allowing interconversion between anomers.

Mutarotation occurs in the absence of free anomeric carbons, allowing interconversion between anomers.

Mutarotation occurs in the presence of stable covalent bonds, allowing interconversion between anomers.

Mutarotation occurs in the presence of a catalyst, allowing interconversion between anomers.