Polymorphic DNA sequences are used for molecular identification. Short tandem repeats $($STRs$)$ and Single Nucleotide Polymorphism $($SNPs$)$ are used as polymorphic markers. The table below summarizes the status of autosomal SNP$,$ autosomal STR$,$ mitochondrial SNP$,$ Y$-$linked STR for four individuals related to each other, representing parents and their two children. Based on the below data, identify the individuals representing the two parents.

$\backslash$table$[[$Individual$,$Autosomal,Mt DNA,Y$-$linked$],[$SNP$,$STR$,$SNP$1,$SNP$2,$STR$],[$A$,$C$/$C$,\frac{13}{12},$C$,$G$,13],[$B$,$C$/$G$,\frac{13}{13},$C$,$A$,13],[$C$,$C$/$G$,\frac{14}{13},$C$,$A$,-],[$D$,$C$/$C$,\frac{13}{14},$C$,$A$,-]]$

a$.$ Individuals A and

b$.$ Individuals A and $$

c$.$ Individuals B and C

d$.$ Individuals $C$ and