(C) Unconventional Dose-Response Curve

(c) Unconventional dose-response curve
Use the accompanying figure to answer the following question.
-Assuming that the scales for graphs (a) and (b) are identical,which of the following statements is TRUE?

A) The toxicant shown in (b) has a lower LD50 compared to the toxicant shown in (a) .
B) The toxicant shown in (b) has a higher toxicity than the toxicant shown in (a) .
C) Graphs (a) and (b) show results for the same toxicant,but graph (a) shows a higher dose than graph (b) .
D) Graphs (a) and (b) show results for the same toxicant,but graph (b) shows a higher dose than graph (a) .
E) The toxicant shown in (b) has a lower toxicity than the toxicant shown in (a) .