GMAT Test Prep: SC-48455482 GMAT Sentence Correction | TOEFL IELTS GMAT GRE SAT ACT PTE ESL

A having, for example, been prescribed a drug at a dosage too low to be effective or having been

B having, for example, a drug prescription that was ineffective because the dosage was too low, or being

C as, for example, having too low of a dosage of a prescribed drug for it to be effective, or being

D when they have, for example, been prescribed too low a drug dosage to be effective, or were

E for example, when they have a drug prescription with a dosage too low to be effective, or been