You are given a solution of virus and asked to determine the titer.You carry out a plaque assay with 0.5mls of a 10⁵ dilution of the virus solution and obtain an average of 150 plaques.What is the titer of the solution?
A) 1.5 x 10⁵ pfu/ml B) 3 x 10⁵ pfu/ml C) 1.5 x 10⁷ pfu/ml D) 3 x 10⁷ pfu/ml E) 1.5 x 10⁸ pfu/ml