According to NEC 680.22(A), what type of receptacle protection is required for receptacles located within 20 feet of a permanently installed swimming pool?

• GFCI protection for all receptacles within 20 feet of the pool walls
• No receptacles are permitted within 10 feet of the pool
• GFCI protection only for receptacles within 6 feet of the pool edge
• GFCI protection required only for receptacles installed after 2008