Disadvantages of chemical agents are

$I.$ chemicals are toxic and harmful to human beings and animals

$II.$ chemicals pollute the environment and plants

$III.$ weedicides used to remove weeds also pollute the soil

Choose the correct option

• A

  $I, II$ and $III$

• B

  $I$ and $II$

• C

  $I$ and $III$

• D

  $II$ and $III$