A BSC has an inflow velocity of 70 fpm, may exhaust HEPA filtered air back into the laboratory, andis designed to be used with toxic volatile chemicals. The cabinet classification that would best matchthis cabinet is/are:a. A Class III cabinetb. No Class I, II, or III cabinetc. A Class II, type A1 cabinet.d. Any Class II cabinet.e. A Class II, type A2 cabinet.