Cancer-causing viruses are called:

Which cells are transformed into cancerous cells by retroviruses?

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 techniques are useful to detect cancers of the internal organs?
$(1)$ Radiography
$(2)$ $ELISA$
$(3)$ $CT-Scan$
$(4)$ $MRI$
$(5)$ $Widal$ test

Select the $INCORRECT$ statement regarding cancer.

$A$ cancer patient is given $.........$ as biological response modifiers.