Although a total lactate dehydrogenase (LD) determination performed alone yields little information as to the area of tissue destruction, an electrophoretic separation of LD isoenzyme may be useful

With what disorder is an increase in LD-5 and LD-4 associated?

a. Acute hepatic disease
b. Acute myocardial infarction
c. Pulmonary infarction
d. Pancreatitis

A