Based on Snowflake's Secure Data Sharing documentation and the community consensus (with multiple comments citing the official documentation and receiving upvotes), the correct answers are C and E. Option C is correct because any Snowflake account can function as both a data provider and consumer, enabling bidirectional sharing. Option E is correct because data consumers only pay for compute resources (virtual warehouses) used to query shared data; they do not pay for storage since no data is physically copied. Option A is incorrect because consumers don't pay for storage. Option B is incorrect because shared data isn't copied to the consumer's account—it's accessed via metadata. Option D is incorrect because providers aren't charged for consumers' compute usage.