Please I need the correct answer

Question 10 O out of 35 points The first-order, liquid phase irreversible reaction 2A = 3B + C takes place in a 900 liter isothermal mixed flow reactor. Pure A enters the reactor at a rate of 10 mole/min. The flow rate of product B is measured to be 9 mole/min at the output. Choose the correct value for the degree of conversion achieved at the output of this reactor. Selected Answers 0.8