Please choose the correct solution to the question: To mix other oil paints to create green,

Solution1: squeeze equal amounts of yellow and black oil paints onto a palette, and mix them with a palette knife blade, adding more of either color to adjust the shade.

Solution2: squeeze equal amounts of yellow and blue oil paints onto a palette, and mix them with a palette knife blade, adding more of either color to adjust the shade.

Answer format: solution1/solution2