The reaction between ethylene and hydrogen bromide to form ethyl bromide is carried out in a continuous reactor. C2H4 + HBr =====> C2H5Br The product stream is analyzed and found to contain 51.7 mole% C2H5Br and 17.3% HBr. The feed to the reactor contains only ethylene and hydrogen bromide. If the molar flow rate of the feed stream is 165 mol/s. Identify the correct statements. (A) No of unknowns are 2 (B) % excess reactants of C2H4 is 19.7% (C) Theoretical requirement of HBr is 75.1 (D) Theoretical requirement of C2H4 is 89.93 moles/sec.