decide whether a discrete or continuous random variable is the best model for each of the following variables: (a) the time for a computer algorithm to assign an image to a category. choose the answer in accordance to the item a) of the question statement. (b) the number of bytes used to store a file in a computer. choose the answer in accordance to the item b) of the question statement. (c) the ozone concentration in micrograms per cubic meter. choose the answer in accordance to the item c) of the question statement. (d) the ejection fraction (volumetric fraction of blood pumped from a heart ventricle with each beat). choose the answer in accordance to the item d) of the question statement. (e) the fluid flow rate in liters per minute. choose the answer in accordance to the item e) of the question statement.