After Years of Work,a Researcher Identified a Novel Protein That

After years of work,a researcher identified a novel protein that binds to serotonin receptors in mouse brain.Which of the following explanations regarding gene patents is most appropriate in this case?

A) The researcher has clearly defined the function of the gene.The gene itself can be patented.
B) The researcher has not yet clearly defined the function of the gene.However,when the function is clearly identified,the gene itself can be patented.
C) The researcher has clearly defined the function of the gene.Thus,the use of the gene can be patented.
D) The researcher has not yet clearly defined the function of the gene.However,when the function is clearly identified,the use of the gene can be patenteD.