Identify the neutral complex: triamminetrinitrocobalt(III)

The same question, asked 2 times: 11 May 2024 S1, 26 Apr 2025 S2. Every wording below, oldest first.

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Question 1
11 May 2024 S1
85 $Which among following complex is a neutral complex?$
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Question 2
26 Apr 2025 S2
99 $Identify neutral complex from following.$
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