cranberry bread recipe

2 cups all-purpose flour - 1 cup granulated sugar - 1 1/2 teaspoons baking powder - 1/2 teaspoon baking soda - 1/2 teaspoon salt - 1/4 cup unsalted butter, softened - 1 large egg - 3/4 cup orange juice - 1 tablespoon orange zest - 1 1/2 cups fresh or frozen cranberries, coarsely chopped - 1/2 cup chopped nuts (optional)