Which of the following is true?

a$)$ HKEY$\_$CURRENT$\_$CONFIG hive data is stored in a separate Registry file called CONFIG and is located at C:$\backslash$Windows$\backslash$System$32\backslash$Config

b$)$ HKEY$\_$LOCAL$\_$MACHINE hive data comes from a SINGULAR structured storage file

c$)$ RegEdit $($native Registry editor tool that comes with Windows$)$ puts the Registry in a virtual hierarchical structure, populating Registry Hives with keys, subkeys, values and data derived from several Registry files found in C:$\backslash$Windows$\backslash$System$32\backslash$Config