The Idea of a Safety Margin for a Particular Drug

Multiple Choice

The idea of a safety margin for a particular drug is based on what idea?

A) Toxic doses will typically be larger than therapeutic doses.
B) Most drugs cause toxicity problems only when combined with other drugs.
C) We need to determine an LD₅₀ using human volunteers.
D) We should only prescribe drugs that are not toxic even at high doses.