i) trusses
ii) statically determinate beams and frames
iii) statically indeterminate structures, the material of which is elastic and follows Hooke’s law
iv) any statically indeterminate structure
The correct answer is ?
A. (i), (ii) and (iii)
B. (i), (ii) and (iv)
C. (i) and (ii)
D. only (i)