Sanskrit Word Forms in Case Order

The question requires arranging the given word forms of 'राजन्' (king) according to the standard Sanskrit case order (विभक्तिक्रमेण).

Identifying Word Forms and Cases

First, determine the case and number for each provided form:

• A. राजभिः: This is the Instrumental Plural (तृतीय विभक्ति, बहुवचन - Tṛtīyā Vibhakti, Bahuvachanam).
• B. राजानौ: This is the Nominative Dual (प्रथमा विभक्ति, द्विवचन - Prathamā Vibhakti, Dvivachanam).
• C. राज्ञः: This form represents multiple possibilities. In the context of the standard case order sequence, it fits as the Accusative Plural (द्वितीया विभक्ति, बहुवचन - Dvitīyā Vibhakti, Bahuvachanam).
• D. राजसु: This is the Locative Plural (सप्तमी विभक्ति, बहुवचन - Saptamī Vibhakti, Bahuvachanam).
• E. राज्ञे: This is the Dative Singular (चतुर्थी विभक्ति, एकवचन - Caturthī Vibhakti, Ekavachanam).

Arranging by Case Sequence

The standard order of Sanskrit cases is:

1. प्रथमा (Prathamā)
2. द्वितीया (Dvitīyā)
3. तृतीया (Tṛtīyā)
4. चतुर्थी (Caturthī)
5. पञ्चमी (Pañcamī)
6. षष्ठी (Ṣaṣṭhī)
7. सप्तमी (Saptamī)

Arranging the identified forms (A, B, C, D, E) according to this case order yields:

1. B. राजानौ (Prathamā Vibhakti)
2. C. राज्ञः (Dvitīyā Vibhakti)
3. A. राजभिः (Tṛtīyā Vibhakti)
4. E. राज्ञे (Caturthī Vibhakti)
5. D. राजसु (Saptamī Vibhakti)

The sequence B, C, A, E, D correctly follows the order of cases: Prathamā, Dvitīyā, Tṛtīyā, Caturthī, and Saptamī.

Final Answer Selection

The derived sequence B, C, A, E, D corresponds to the correct arrangement of the word forms presented in the question, matching the required case order.