Twenty randomly selected car salespersons were asked the number of cars they generally sell in one week. The responses were Four sold 3 cars; Six sold 4 cars; Five sold 5 cars; Four sold 6 cars; Two sold 7 cars. 3,3,3,4,4,4,4,4,4,5,5,5,5,5,6,6,6,6 ,7,7

Layer r contains a well-known index fossil that is 100 million years old. based on this information and the principle of superposition, a. layers t and m are older than 100 million years, and layers x and g are younger than 100 million years. b. layers t, m, x, and g are all older than 100 million years. c. layers t and m are younger than 100 million years, and layers x and g are older than 100 million years.