Read the following statements and find out the option contains all the incorrect statements :-

(a) alpha-interferon are the biological response modifiers which activates the immune system of the patients and helps in destroying the tumor.

(b) Normal cells show a property called contact inhibition by virtue of which contact with other cells inhibits their uncontrolled growth.

(c) Ionising radiations like X-rays and gamma rays and non-ionising radiations like UV cause DNA damage leading to neoplastic transformation.

(d) Malignant tumors normally remain confined to their original location.

(e) Metastasis is the most feared property of malignant tumors.