Select the true statements.
$I.$ Cancer can be detected by the use of antibodies against cancer-specific antigens for certain types of cancer.
$II.$ The tumor cells are surgically removed to reduce the load of cancerous cells.
$III.$ Certain chemotherapeutic drugs are used to kill the cancerous cells,but the majority of the drugs have side effects like hair loss,anaemia,etc.

• A
  $I$ and $II$
• B
  $I$ and $III$
• C
  $II$ and $III$
• D
  $I, II$ and $III$