Which of the following is a cancerous condition of the blood?

Neoplastic characteristics of cells refer to:
$A.$ $A$ mass of proliferating cells
$B.$ Rapid growth of cells
$C.$ Invasion and damage to the surrounding tissue
$D.$ Those confined to original location
Choose the correct answer from the options given below:

Which of the following statements are correct?
$A.$ Computed tomography and magnetic resonance imaging detect cancers of internal organs.
$B.$ Chemotherapeutic drugs are used to kill non-cancerous cells.
$C.$ $\alpha$-interferon activates the cancer patients' immune system and helps in destroying the tumour.
$D.$ Chemotherapeutic drugs are biological response modifiers.
$E.$ In the case of leukaemia,blood cell counts are decreased.
Choose the correct answer from the options given below:

The recently discovered vitamin having anti-cancer properties is:

Which of the following cancers is caused by the consumption of tobacco?

Cancerous cells are more easily destroyed by radiation than normal cells because they .......