When using supplier surveys to collect supply chain emissions data for Scope 3 Category 1, what is a key limitation GRI reporters must disclose?
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A
Surveys cannot be used for Scope 3 Category 1 under any circumstances
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B
Response rates may be low, leading to gaps filled with spend-based estimates
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C
Supplier data is legally confidential and cannot be disclosed publicly
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D
Only Tier 1 suppliers are legally obligated to respond to surveys