GMAT Critical Reasoning (CR) | Re: Thousands who suffer heart attacks each year die before

Thousands who suffer heart attacks each year die before reaching a hospital or clinic where they can benefit from the drugs that dissolve clots in coronary arteries. The Food and Drug Administration recently approved a new blood clot dissolving agent, which a spokesman claimed could save the lives of many people who would otherwise join this group of heart attack victims.

Which of the following, if true, would seriously weaken the argument above?

(A) The new agent must be administered by a team