选择题
2023 AMC 8 Problem 9: Skiing Elevation
Malaika is skiing on a mountain. The graph below shows her elevation, in meters, above the base of the mountain as she skis along a trail. In total, how many seconds does she spend at an elevation between 4 and 7 meters?
2023 AMC 8 第9题：滑雪海拔
马莱卡正在山上滑雪。下图显示了她沿着小路滑雪时距山脚的海拔高度（以米为单位）。她总共在 4 到 7 米的海拔高度停留了多少秒
A.
6
B.
8
C.
10
D.
12
E.
14