A body is projected vertically up from the ground. Taking air resistance into account, if t₁ is the time taken in going up while t₂ in coming down to starting point, then:

• A

  ${\mathrm{t}}_1>{\mathrm{t}}_2$

• B

  ${\mathrm{t}}_1={\mathrm{t}}_2$

• C

  ${\mathrm{t}}_1<{\mathrm{t}}_2$

• D

  t₁ can be greater or smaller depending upon the initial velocity of the body