The drug heparin is frequently administered intravenously in order to prevent blood clots. But some doctors point out that thousands of patients undergoing treatment with heparin have suffered adverse reactions in just the last year. Since there are no plans to make any modifications to the drug, adverse reactions in patients being treated with heparin will only increase if use of the drug becomes more widespread.
Which of the following, if true, most seriously weakens the argument?
【选项】
Other blood thinning agents, such as warfarin, do not appear safer than heparin.
选项是否正确？