**Core Concept**
Type 2 Brittle Asthma is a severe and unpredictable form of asthma characterized by rapid and extreme fluctuations in peak expiratory flow rates. This condition is often resistant to standard asthma treatment and requires more aggressive management.

**Why the Correct Answer is Right**
The drug of choice for type 2 Brittle Asthma is oral corticosteroids due to their potent anti-inflammatory effects. Oral corticosteroids rapidly reduce inflammation in the airways, which can help stabilize the condition and prevent severe asthma attacks. However, long-term use of oral corticosteroids can have significant side effects, making careful patient selection and monitoring crucial.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as bronchodilators alone are not sufficient to manage type 2 Brittle Asthma, which requires more aggressive anti-inflammatory treatment.
**Option B:** This option is incorrect as leukotriene modifiers may provide some benefit in mild asthma but are not effective in managing the severe inflammation seen in type 2 Brittle Asthma.
**Option C:** This option is incorrect as theophylline, a methylxanthine, has some anti-inflammatory effects but is not the preferred treatment for type 2 Brittle Asthma.

**Clinical Pearl / High-Yield Fact**
The term "brittle" in Brittle Asthma refers to the unpredictable and extreme fluctuations in lung function, which can be life-threatening if not managed promptly.

**Correct Answer:** A. Oral corticosteroids.