GMAT Reading Comprehension (RC) | Re: *Fresh* Erythropoietin, known also as EPO

My pick D, C, E, E

1. According to the passage, which one of the following is a challenge in using synthetic EPO to treat patients?

(A) It has to be administered more frequently and in larger doses than is ideal.
(B) It does not increase hematocrit levels as quickly as naturally occurring EPO does.
(C) It has more cardiovascular risk than othertreatments.
(D) It is frequently stolen by those seeking performance enhancement.
(E) It can result in dangerously low hematocrit levels.


2. Which of
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