People influenced by brand

213 people were influenced by brand as there is not stated limit to the amount of people they surveyed, and also because they strictly say whether they only bought based on brand, size, color, or intersects of both. Therefore, a number cannot be reduced in the properties, and since they are asking how many people bought based on brand, we add the intersects involving brand as one of the influential factors with the amount that only bought brand and with those who bought based on all three.