Consider the following statements: In a thick walled cylindrical pressure vessel subjected to internal pressure, the tangential and radial stresses are
1. Minimum at outer side.
2. Minimum at inner side.
3. Maximum at inner side & both reduce to zero at outer wall.
4. Maximum at inner wall but the radial stress reduces to zero at outer wall.
Which of the statements given above is/are correct?
(a) 1 and 2 (b) 1 and 3
(c) 1 and 4 (d) 4 only