How many carrots would one with moderate physical activity need to eat per day as the starch part of the bulletproof diet to intake sufficient carbohydrates.
& if you are specifically looking for starches from vegetables, then carrots are a bad option...
Carrots are a sugary vegetable, the majority of the carbs are coming from sugars, not starch. http://nutritiondata.self.com/facts/vegetables-and-vegetable-products/2383/2
fake it till you make it