As a generalization, at what PEFR should someone be admitted?

• A. PEFR<25% pretreatment and <40% posttreatment
• B. PEFR<10% pretreatment and <20% posttreatment
• C. PEFR<40% pretreatment and <60% posttreatment
• D. PEFR<50% pretreatment and <70% posttreatment
• E. PEFR is of no value in this decision