Which of the following is $NOT$ a method for the diagnosis of 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 :

What is cancer? How is a cancer cell different from a normal cell? How do normal cells attain cancerous nature?

Which of the following is known as blood cancer?

Which one of the following is not a property of cancerous cells,whereas the remaining three are?

Define the following terms: Carcinogens and Tumour.