Q6. A force \( \mathbf{F} = 5 \, \hat{\mathbf{i}} + 2 \, \hat{\mathbf{j}} \, \text{N} \) acts at \( \mathbf{r} = -1 \, \hat{\mathbf{i}} + 3 \, \hat{\mathbf{j}} \, \text{m} \). What is the torque about the origin?
- A. -19 Nm
- B. -17 Nm
- C. -15 Nm
- D. -13 Nm