If in a rigid-jointed space frame, (6m + r) < 6j, then the frame is
(A) Unstable
(B) Stable and statically determinate
(C) Stable and statically indeterminate
(D) None of the above
(A) Unstable
(B) Stable and statically determinate
(C) Stable and statically indeterminate
(D) None of the above