Which Is the Most Appropriate Nursing Action Related to the Administration

Which is the most appropriate nursing action related to the administration of digoxin (Lanoxin) to an infant?

A) Counting the apical rate for 30 seconds before administering the medication
B) Withholding a dose if the apical heart rate is less than 100 beats/min
C) Repeating a dose if the child vomits within 30 minutes of the previous dose
D) Checking respiratory rate and blood pressure before each dose