which one is the right answer ?

Ethanol is produced commercially by the hydration of othylenie Cole In this case He reacts with water to form ethanol CH CH denoted by scripts (ott) and (e) respectively. Assuming the conversion of ethylene in a reactor is not 100% which of the following material balances over the reactor is correct for the atomic species of Hat steady state? F = Food Stream P = Product stream O a 0 - 2F + 2 nothy Fwp-2 rothy P O b.0=wFrothy F-P.PRethy.PP OC 02 F +4lletty.Fonep-nethy P-2nwP O d. 0 - 2tly F-2 p2rothy.P