$(A)$ Glucose $(B)$ Gulose
$(C)$ Fructose $(D)$ Maltose
$(E)$ Mannose

$(1)$ Denaturation of proteins causes loss of secondary and tertiary structures of the protein.
$(2)$ Denaturation leads to the conversion of double strand of $DNA$ into single strand.
$(3)$ Denaturation affects primary structure which gets distorted.