In Pennsylvania, earnest money deposits must be placed in escrow within:

Option B (24 hours) is incorrect because Pennsylvania law specifically references business days, not a strict 24-hour period. This distinction is important as it accounts for weekends and holidays when offices may be closed.

Option C (reasonable time as agreed in writing) is incorrect because Pennsylvania law establishes a specific timeframe, not leaving it to agreement between parties. This statutory requirement ensures consistency and protection for consumers.

Option D (5 business days) is incorrect because it represents a much longer timeframe than Pennsylvania requires. This longer period might be found in other states or for different types of transactions, but not for earnest money deposits in PA.