Stock declaration must include:

A comprehensive stock declaration is crucial for accurate inventory management and regulatory compliance. Option A is correct because it encompasses all essential details: quantity for physical count, value for financial assessment, invoices for proof of purchase, purchase date for age tracking, and sales information for movement analysis. These elements provide a complete picture of stock.

• Option B is too limited, as 'stock & value' alone lack transactional context.
• Option C, 'Only invoices', provides proof of purchase but not current stock levels or sales.
• Option D, 'Only market price', is a single financial metric and doesn't cover the physical or transactional aspects of stock.