A force \({\rm{\vec F}} = {\rm{\hat i}} + 3{\rm{\hat j}} + 2{\rm{\hat k}}\) acts on a particle to displace it from the point \({\rm{A}}\left( {{\rm{\hat i}} + 2{\rm{\hat j}} - 3{\rm{\hat k}}} \right)\) to the point \({\rm{B}}\left( {3{\rm{\hat i}} - {\rm{\hat j}} + 5{\rm{\hat k}}} \right)\).The work done by the force will be

• A. 5 units
• B. 7 units
• C. 9 units
• D. 10 units