A patient is placed on oral steroids with instructions to taper the dose over a 3-week period. The patient is to take 50 mg/day during week 1. The dose is to be reduced by 20% for week 2. In week 3, the dosage from week 2 is to be reduced by 50%. What is the correct dosage per day for week 3 (in mg)?
A) 15 mg/day
B) 20 mg/day
C) 25 mg/day
D) 30 mg/day