The managers of a brokerage firm are interested in finding out if the number of new clients a broker brings into the firm affects the sales generated by the broker. They sample 12 brokers and determine the number of new clients they have enrolled in the last year adn their sales amounts in thousands of dollars. These data are presented in the table that follows: ------------------------------------------- Broker----------Clients----------Sales 1--------------------27---------------52 2--------------------11---------------20 3--------------------20---------------64 4--------------------33---------------55 5--------------------15---------------29 6--------------------20---------------34 7--------------------25---------------58 8--------------------36---------------20 9--------------------28---------------44 10-------------------30---------------48 11-------------------20---------------31 12-------------------22---------------38 Refering to the data table above, the percentage of total variation in sales generated can be explained by the number of new clients brought in equals:

		8.3%
		27.6%
		55.9%
		78.5%