A 21-Year-Old Female Student Is Scheduled for an Open Mitral

A 21-year-old female student is scheduled for an open mitral valve commissurotomy for treatment of a mitral stenosis resulting from rheumatic endocarditis when she was a child.Which factor supports the choice of valve repair over valve replacement in this patient?

A) No artificial valves are available yet to replace mitral valves.
B) Valve repair has a lower operative mortality rate than does valve replacement.
C) Biological replacement valves necessitate long-term immunosuppressive therapy.
D) Long-term anticoagulation is necessary with mechanical valve replacement.