The side-by-side stemplot below displays the arm spans, in centimeters, for two classes. A stemplot titled Arm Span (centimeters). For Class A, the values are 148, 151, 153, 155, 156, 159, 161, 162, 164, 165, 169, 169, 170, 171, 175, 176, 179, 179, 180, 182, 183, 186, 186, 190. For Class B, the values are 153, 155, 16, 160, 162, 162, 162, 163, 163, 165, 166, 167, 170, 173, 180, 181, 182, 189, 192, 202.

Which statement correctly describes the proportion of arm spans that are longer than 170 cm?

The proportion of arm spans that are longer than 170 cm is higher in Class B than in Class A.
The proportion of arm spans that are longer than 170 cm is higher in Class A than in Class B.
The proportion of arm spans that are longer than 170 cm is about the same for Class A and Class B.
The proportion of arm spans that are longer than 170 cm cannot be compared with the given information.