T^oC051015204060S.V.P(mmHg)4.586.518.9412.6717.5055.10149.00
The table above shows the saturation vapour pressure against temperature in a certain town. If the vapour pressure in this town at 20^oC is 10mmHg, what is the relative humidity?

• A.170.0%
• B.57.0%
• C.17.5%
• D.10.0%
• E.