We use sometimes the measures to know the direction of moment in the calculations of the moments caused by the conservative forces. Which one is right about it(consider the mentioned axis to be positive)?

• A. Thumb is z-axis, fingers curled from x-axis to y-axis
• B. Thumb is x-axis, fingers curled from z-axis to y-axis
• C. Thumb is y-axis, fingers curled from x-axis to z-axis
• D. Thumb is z-axis, fingers curled from y-axis to x-axis
• E. ?a) Thumb is z-axis, fingers curled from x-axis to y-axisb) Thumb is x-axis, fingers curled from z-axis to y-axisc) Thumb is y-axis, fingers curled from x-axis to z-axisd) Thumb is z-axis, fingers curled from y-axis to x-axis