$\begin {array} {1 1} (a)\;A\: force \: but \: no\: torque & \quad (b)\;A\: torque\: but\: no\: force \\ (c)\;Both\; torque\: and\: a\; force & \quad (d)\;Neither\: a \: torque\: nor\: a\: force \end {array}$