When the nurse is teaching a student about radiation therapy safety principles for cancer treatment, which statement by the student indicates teaching was effective? Select all that apply. One, some, or all responses may be correct. “Patients receiving ‘high dose rate’ implants can go home during the several days of their therapy.” “All forms of radiation therapy involve the use of radioactive material and have the same risk for patients and staff.” “Brachytherapy is the placement of a radioactive source in the body; therefore all body excreta are radioactive during this time.” “Although stereotactic body radiotherapy uses a radiation source outside the body, the patient’s excreta are not radioactive.” “Isotopes are radioactive; therefore they should remain in sealed containers at all times, even during planned treatment.”