The correct option is
C Highest in case of potato starch
Starches are unpredictable sugars. Keep away from these sorts of nourishment: grains (even "entire" grains), rice, oats, flour, cornstarch, breads, pastas, biscuits, bagels, wafers, and "dull" vegetables, for example, moderate cooked beans (pinto, lima, dark beans), carrots, parsnips, corn, peas, potatoes, French fries, potato chips.
Primarily in the form of starch, the carbs range from 66-90% of dry weight.
So, the correct option is 'Highest in case of potato starch'.