Which of the following is known as blood cancer?

Select the correct statements about cancer $:-$
$(A)$ Cancer cells show the property of contact inhibition.
$(B)$ Benign tumors normally remain confined to their original location and do not spread to other parts of the body.
$(C)$ Metastasis is the most feared property of benign tumours.
$(D)$ $X$-rays and gamma rays can lead to neoplastic transformation.
Choose the correct answer from the options given below :

Which of the following parts is most affected by radiation?

Ionizing $P$ and non-ionizing $Q$ radiations cause cancer.
$\quad \quad \quad P \quad\quad Q$

In this type of cancer,the number of immature white blood cells increases:

Smoking addiction is harmful because it produces polycyclic aromatic hydrocarbons,which cause: