Please choose the correct solution to the question: To Make Streusel Topping, Place the Flour Mixture Set Aside Earlier in a Bowl. Then Add in Melted Butter.

Solution1: Place the Flour Mixture Set Aside Earlier in a Bowl. Then Add in Melted ice.

Solution2: Place the Flour Mixture Set Aside Earlier in a Bowl. Then Add in Melted Butter.

Answer format: solution1/solution2
Answer: solution2