Before becoming head of the department of surgery at Howard University,
Dr. Charles Drew discovered that blood plasma, which keeps for months, can be used in transfusions to replace whole blood, which deteriorates in a few days when stored.
(A) Dr. Charles Drew discovered that blood plasma, which keeps for months, can be used in transfusions to replace whole blood, which deteriorates in a few days when stored
(B) Dr. Charles Drew discovered that blood plasma can keep for months and replace whole blood in transfusions, which deteriorates in a few days when stored
(C) Dr. Charles Drew's discovery was that blood plasma can replace whole blood in transfusions because it can keep for months instead of deteriorating in a few days when stored
(D) the discovery was made by Dr. Charles Drew that blood transfusions can replace whole blood, which deteriorates in a few days when stored, with blood plasma, which can keep for months
(E) the ability in transfusions to replace whole blood, which deteriorates in a few days when stored, with blood plasma, which can keep for months, was discovered by Dr. Charles Drew
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