WHAT_IS_THE_FACTOR_RESPONSIBLE_FOR_THE_LEFT_‚ÄÖ√Ñ√∂‚ÀÖ√Ë‚ÀÖ¬®_HANDED_HELICAL_CONFORMATION_IN_Z_FORM_OF_DNA??$#

• A. Syn conformation at pyrimidine
• B. Anti conformation at pyrimidine
• C. Syn conformation at purine
• D. Anti conformation at purine