Three Medical Students (X,Y,and Z)studying for Their Physiology Final Examination

Multiple Choice

Three medical students (X,Y,and Z) studying for their physiology final examination develop headaches.Student X takes a regular aspirin with a glass of water; Y takes an enteric-coated aspirin with a glass of water; and Z takes an enteric-coated aspirin with a glass of milk (an enteric coating is one that dissolves only when the pH is above 6) .Assuming that headache relief is proportional to plasma aspirin concentrations and that X_t,Y_t,and Z_t are the times until relief is experienced by the respective students,which of the following best represents the relationship between X_t,Y_t,and Z_t?

A) X_t = Y_t = Z_t
B) X_t > Y_t = Z_t
C) X_t < Y_t < Z_t
D) X_t = Y_t > Z_t
E) X_t > Y_t > Z_t