Indicate whether the following variables would use anominal, ordinal, interval, or ratio scale.Explain your reasoning for each answer:

(a)A variable indicating whether someone at a company works in its sales, production, accounting, or human resources departments.

(b)A variable indicating the price of gasoline in US dollars.

(c)A variable indicating an Olympic athlete's outcome in the Tokyo Olympics ("Gold medal", "Silver medal", "Bronze medal", "No medal")

(d)A variable indicating the number of customers who purchased groceries from Walmart last weekend.