<prompt> True regarding the following isA is having highest efficacyA is having least potencyD is having highest potencyC is least potent  <response>: The picture shows dose response curves of various drugs in which right sided is most potent least dose is required to produce effect, left is least potenthigh dose required to produce the effect. So drug C is least potent. Efficacy is estimated by height -Drug D is most efficaciousRef: Katzung 11th ed pg 31 