The question asks for the major product formed in a sequence of reactions, but the actual reaction scheme/structures are missing.

Also, the options are listed only as:

• A:
• B:
• C:
• D:

with no corresponding structures or names.

Step 1: What is needed to solve this

To identify the major product in an organic chemistry sequence involving nitrogen-containing compounds, I need:

1. The starting compound
2. The reagents/conditions in sequence
3. The structures or names of options A, B, C, D

Step 2: Why the answer cannot be derived

Without the reaction sequence or option structures, there is no chemical information to analyze. So it is impossible to:

• determine the reaction pathway,
• predict intermediates,
• identify the final major product,
• verify whether option C is actually correct.

Step 3: Comparison with stored answer

The stored correct answer is C, but since the reaction details and options are absent, I cannot independently verify it.

Hence, I do not have enough information to agree with the stored answer on chemical grounds.

Please provide the reaction scheme/image and the option structures so I can solve it step-by-step properly.