A II-B2 BSC with downflow velocity 60 fpm, inflow velocity 105 fpm through a front opening of 2.86 sq.ft., supply volume of 700 cfm, inflow volume of 300 cfm and exhaust volume of 1000 cfm. If the exhaust is reduced by 5%, what is inflow velocity? a. 100 fpm b. This cannot be determined as the exhaust alarm will interlock the supply blower. c. 103 fpm d. 950 cfm e. 88 fpm