Concept:
In aesthetics theory from the Natyashastra, mental states are explicitly categorized into stable, primary emotions (Sthayi Bhava) and transient, passing states (Sanchari/Vyabhichari Bhava).
Step 1: Filtering stable primary emotions from transient feelings.
• Rati (Love/Pleasure) is a fundamental Sthayi Bhava corresponding to Shrangara Rasa.
• Haas (Laughter/Mirth) is a fundamental Sthayi Bhava corresponding to Hasya Rasa.
• Shoka (Grief/Sorrow) is a fundamental Sthayi Bhava corresponding to Karuna Rasa.
Conversely, *Glani* (Fatigue/Exhaustion) is explicitly classified as a temporary state (*Sanchari Bhava*). While some text versions list *Nirveda* (Detachment) under specific later contexts, the classic textbook configuration for this option grouping strictly locks C, D, and E as the permanent dominant emotions.