Identify the correct flow of blood through a one-circuit system.
A. ventricle - gill capillaries - systemic capillaries - sinus venosus - atrium
B. ventricle - systemic capillaries - gill capillaries - sinus venosus - atrium
C. ventricle - pulmonary capillaries - atrium - aorta - systemic capillaries
D. ventricle - gill capillaries - systemic capillaries - atrium - sinus venosus
Answer: A
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