Please choose the correct solution to the question: To color homemade toothpaste.

Solution1: Mix the food coloring (if it's powdered) with a spoonful of vodka. You don't need much. It's just for fun anyway. Add it to your mixture. If your food coloring is liquid, just pour some in.

Solution2: Mix the food coloring (if it's powdered) with a spoonful of oil. You don't need much. It's just for fun anyway. Add it to your mixture. If your food coloring is liquid, just pour some in.

Answer format: solution1/solution2
Answer: solution1