Here's how to make lemonade: "To make delicious lemonade, you need lemons, sugar, and water. First, squeeze the juice from four lemons into a pitcher. Next, add half a cup of sugar and stir until it dissolves. Then, pour in four cups of cold water and mix well. Finally, add some ice cubes and a few lemon slices for garnish." What is the most important ingredient for lemonade, according to the text?
A) Sugar