The Development of a Blood Substitute Would Be Welcomed for All

The development of a blood substitute would be welcomed for all of the following reasons EXCEPT which one?

A) Human blood may carry and transmit infectious agents.
B) Human blood storage requires refrigeration, which might not be available in developing countries.
C) The supply of donated human blood generally cannot keep up with the demand.
D) Transfused blood rarely persists for more than a few days in the recipient.
E) Typing and cross-matching are necessary with human blood, and the right type may not be available.