This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
In the gr'cii circuit, the arc! flow pressure is 100 mm Hg and the outward flow pressure is 10 mm Hg. Each of the parallel circuit has a resistance of 5 mm Hg/mL/min. Calculate the flow across the circuit: 
Select and explain. 
A. 45 mL, B. 90 mL, C. 3.6 mL, D. 135 mL
A: 45 mL
Answer: A: 45 mL 
Explanation: Ans. b. 90 mL