Please choose the correct solution to the question: How quickly should I grind and polish the concrete when making a concrete countertop?

Solution1: Do all your grinding and polishing after 4 days but before 10 days so the concrete is stiff enough but not full strength yet

Solution2: Do all your grinding and polishing after 4 days but before 10 days so the concrete is stiff enough but not full wetness yet

Answer format: solution1/solution2