Which case is most likely a claim made by a physician who is biased?
Choose one:
A. After conducting large-scale trials on his or her own patients, a physician claims a new drug is very effective in reducing cancerous tumors.
B. A physician makes claims about the effectiveness of a new welding technique used in building bridges.
C. A physician who does consulting work for a pharmaceutical company claims that one of its new drugs is very effective in reducing cancerous tumors.
D. After reproducing the trial results on his or her own patients, a physician claims that a new drug is very effective in reducing cancerous tumors.