If the height of a projectile at a time of 2 s from the beginning of motion is 60 m, then the time of flight of the projectile is (Acceleration due to gravity $=10 \mathrm{~m} \mathrm{~s}^{-2}$ )

• A

  12 s
• B

  4 s
• C

  6 s
• Correct answer
  D

  8 s

Hence, the correct answer is option: 'D'.