The relative humidity is plotted on a psychrometric chart along:
a. The Lines curving upwards from the lower left to the upper right side of the chart
b. The Horizontal axis on the bottom of the chart
c. Vertical lines, and read along the horizontal scale at the bottom of the chart
d. The Saturation line and plotted along the horizontal lines
e. Horizontal lines and read along the left side scale
Answer: A