The correct option is C Nuclease
A nuclease is an enzyme capable of cleaving the phosphodiester bonds between the nucleotide subunits of nucleic acids. Succus entericus is the clear to pale yellow watery secretions from the glands lining the small intestine walls. It contains hormones, digestive enzymes, mucus and bicarbonate. It contains digestive enzymes such as sucrase, maltase, lipase, dipeptidase, etc. for final digestion of food. It does not contain nuclease enzyme.