We use sometimes the measures to know the direction of moment. It is done by right handed coordinate system. Which 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