Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to make rocket fuel [title] Preheat an oven to 300 degrees fahrenheit (150 degrees celsius). [title] Mix the ingredients. [step] Combine 100 g (3.22 oz.

Ending1: ) powdered sugar , 3 tbsp. ( 128 ml) all-purpose flour and 1 cup (240 ml) of peanut butter in a medium bowl. Ending2: ) of potassium nitrate (kn03), 50 g (1.61 oz. ) of sugar , 18 g (0.58 oz. Ending3: ) of milk , 2 tablespoons (28 g) of kosher salt, and 1 teaspoon (5 ml) of baking soda in a small mixing bowl. Stir everything together with a wooden spoon until completely combined. Ending4: ) of ground sirloin steak , 1 1/2 teaspoons (4.5 g) of lemon juice , 3 diced tomatoes and 3 chopped onions in a large mixing bowl. Use a fork to mix the ingredients until well-combined.

Answer format: ending1/ending2/ending3/ending4