Which of the following statement is wrong?

- 1
  
  The rolled steel channel sections are unsymmetrical sections about Y-axis.
- 2
  
  The rolled steel angle sections are unsymmetrical sections about both X-axis and Y-axis.
- 3
  
  The rolled steel T-sections are used as beams in the rectangular water tanks.
- 4
  
  none of the above

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