A Child with Severe Hemophilia a Receives Factor VIII

A child with severe hemophilia A receives factor VIII. The nurse expects this drug to be given:

A) on demand when bleeding occurs.
B) on demand when plasma factor VIII activity is less than 1% above normal.
C) prophylactically once weekly to maintain normal factor VIII activity.
D) prophylactically 3 times weekly to maintain factor VIII activity above 1% of normal.