The dot plot represents an order of varying shirt sizes. which histogram represents the same data?

Need this asap if anyone can i would be very grateful. if you could show workings that would really

Two cyclists 84 miles apart start riding toward each other at the samen time. one cycles 2 times as fast as the other. if they meet 4 hours later what is the speed (in miles) of the faster cyclists

Icould really use some with this question.