Which of the following conditions might result in the back flow of blood through a weakened mitral valve?
A. High pressure in the right ventricle, low pressure in the right atrium
B. High pressure in the left ventricle, low pressure in the left atrium
C. High pressure in the left atrium, low pressure in the left ventricle
D. High pressure in the right atrium, low pressure in the right ventricle
Answer: B
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