Which tomato sauce has the least carbs?

* Rao's Homemade Marinara Sauce: 2g net carbs per 1/2 cup

* Primal Kitchen Unsweetened BBQ Sauce: 1g net carbs per 2 tablespoons

* Tessemae's Organic Mild Salsa: 2g net carbs per 2 tablespoons

* Whole Foods Market 365 Everyday Value Organic Marinara Sauce: 3g net carbs per 1/2 cup

* Trader Joe's Organic Roasted Red Pepper & Tomato Pasta Sauce: 3g net carbs per 1/2 cup

* Newman's Own Marinara Sauce: 4g net carbs per 1/2 cup

* Hunts Tomato Sauce: 5g net carbs per 1/2 cup

* Cento San Marzano Whole Peeled Tomatoes: 6g net carbs per 1 cup