Is Barbara's Bakery Inc. Organic cereal healthy?

Barbara's Bakery Inc. Organic cereal scores 39/100, Grade C, on HealthierCart. Category: plant based foods and beverages. No flagged additives.

Ingredients: Organic corn flour, organic cane sugar, organic whole grain corn flour, organic whole grain oat flour, fructan (nutraflora prebiotic dietary fiber), organic oat hull fiber, calcium carbonate, sea salt, natural flavor.