Classic Macaroni Salad

INGREDIENTS

• 4 cups uncooked elbow macaroni
• 1 cup mayonnaise
• 1/4 cup distilled white vinegar
• 2/3 cup white sugar
• 2 1/2 tablespoons prepared yellow mustard
• 1 1/2 teaspoons salt
• 1/2 teaspoon ground black pepper
• 1 large onion, chopped
• 2 stalks celery, chopped
• 1 green bell pepper, seeded and chopped
• 1/4 cup grated carrot (optional)
• 2 tablespoons chopped pimento peppers (optional)