Which of the distributions is left skewed? A graph shows the horizontal axis numbered 12 to 120. The vertical axis is numbered 1 to 5. The graph shows an upward trend. A graph shows the horizontal axis numbered 22 to 121. The vertical axis is numbered 1 to 3. The graph shows a downward then upward trend. A graph shows the horizontal axis numbered 78 to 100. The vertical axis is numbered 1 to 3. The graph shows a downward trend. A graph shows the horizontal axis numbered 60 to 100. The vertical axis is numbered 1 to 3. The graph shows an upward then downward trend.