Which force and distance combination gives the smallest moment around a pivot?
- Aa $6.0\ \text{N}$ force at a perpendicular distance of $4.0\ \text{m}$ from the pivot
- Ba $7.0\ \text{N}$ force at a perpendicular distance of $6.0\ \text{m}$ from the pivot
- Ca $10\ \text{N}$ force at a perpendicular distance of $4.0\ \text{m}$ from the pivot
- Da $12\ \text{N}$ force at a perpendicular distance of $3.0\ \text{m}$ from the pivot