<prompt> Which of the following is used in Brachytherapy:RdId -125IrAll of the above  <response>: Brachytherapy: Rd, Id 125, Cs, Ir, Au used.P-32, Strontium -89, Samarium-153, NOT iridium -192 are used in systemic radionucluideP-32 emits B-rays 