Which of the following statements are true?

- The Saffir-Simpson scale currently in use (eg 2018) ranks hurricanes based on wind speed, storm surge and central pressure

- The Enhanced Fujita scale has a lower limit of 74 mph

- The Saffir-Simpson scale has an upper limit of 200 mph

- The enhanced fujita scale relies on direct observation of the tornado for its ranking

- None are correct

Please need short explanation of correct Options and also other options (must).