Which statement correctly explains the aspect “Scholarly analyses of innamā” in the example “إِنَّمَا”?

Qasr by Coordination, Negation–Exception, and Innamā

• Selecting a restriction device — Coordination, negation–exception, and innamā.
• Scholarly analyses of innamā — Only; indeed no more than.
• Coordination and determination — Zayd is a poet, not a writer.
• Restricting the agent — Only Zayd came.