Please choose the correct solution to the question: What supplies are needed to make a rainbow in a bottle?

Solution1: A small, opaque bottle        Food Coloring        Water        Salt        5 small beakers (or drinking cups)        Spoon or stirrer        Scale or electronic balance (or 1/2 teaspoon)        Pipette or medicine dropper

Solution2: A small, clear bottle        Food Coloring        Water        Salt        5 small beakers (or drinking cups)        Spoon or stirrer        Scale or electronic balance (or 1/2 teaspoon)        Pipette or medicine dropper

Answer format: solution1/solution2
Answer: solution2