Table 71
a Disk- Diffusion Test Using Staphylococcus Gave the Following

Table 7.1
A disk- diffusion test using Staphylococcus gave the following results: $\begin{array}{cc} \underline{\text { Disinfectant }}& \underline{\text { Zone of inhibition (mm) }}\\\text { A } & 0 \\\text { B } & 2.5 \\\text { C } & 10 \\\text { D } & 5\end{array}$
-In Table 7.1, which compound was the most effective against Staphylococcus?

A) A
B) B
C) C
D) D
E) Can't tell