Vd is calculated before elimination vd=iv given mg/plasma concentration

Answer given is B. Need explanation… Yeah, so elimination will be 33% right…

Vd equal to dose given divided by plasma conc. At 0 sec. Its first order kinetic with elimation factor 33. If at 2 hour conc 100 then means at 0 sec or intial plama conc is 100/67 … put these … ans will vd equal to 6.7 l