Final answer:
The correct class of general anesthetics is intravenous.
Step-by-step explanation:
The correct class of general anesthetics is A. intravenous. Inhalational anesthetics and injections, including intravenous, are both forms of general anesthesia. Inhalational anesthetics are administered as volatile liquids or gases through an anesthesia machine, while intravenous anesthetics are given as injections.