This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Dental
Jacobson’s organ is 
Select and explain. 
A. Funnel shaped, B. Along with nasopalatine ducts are called as auillary olfactory sense organs, C. Extends form eyes to oral cavity, D. All of the above
B: Along with nasopalatine ducts are called as auillary olfactory sense organs
Answer: B: Along with nasopalatine ducts are called as auillary olfactory sense organs 
Explanation: In most mammals the nasopalatine ducts are patent and together with Jacobson's organs, are considered as auxiliary olfactory sense organs.
Jacobson's organ is a small ellipsoid (cigar shaped) structure lined with olfactory epithelium that extends from the nose to the oral cavity.