This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: COPD and Asthma, Subject name: Medicine
A 16-year-old asthmatic is currently on salbutamol inhaler which she uses twice a week on an average and frequently wakes up coughing. She has a compliant with her treatment regimen and has good inhaler technique. Which of the following would be the most appropriate next step in managing her asthma? 
Select and explain. 
A. Budesonide 200mg BD, B. Theophylline 300mg sustained release, C. Montelukast 10mg, D. Salmeterol 50mg BD
A: Budesonide 200mg BD
Answer: A: Budesonide 200mg BD 
Explanation: Noctural symptoms indicate paial control, so we have to add ICS along with SABA