Consider the following statements related to Mohr’s circle for stresses in case of plane stress:
1. The construction is for variations of stress in a body.
2. The radius of the circle represents the magnitude of the maximum shearing stress.
3. The diameter represents the difference between the two principal stresses.
Which of the above statement are correct?
(a) 1, 2 and 3 (b) 2 and 3 only (c) 1 and 3 only (d) 1 and 2 only