For any type of reactor, the material balance equation is valid.[Rate of reactant flowing into element of volume] = [Rate of reactant flowing out of element of volume] + [Rate of reactant loss due to chemical reaction within the volume element] + [Rate of accumulation of reactant in the volume element] Which of the following is false?

• A. Two terms disappear in case of a batch reactor
• B. Only three terms are non-trivial when we analyze a semi batch reactor
• C. One term becomes zero for a steady-state flow reactor
• D. There is no flow of reactants in a batch reactor