NE is a water-soluble molecule that acts as a hormone or neurotransmitter depending on what cell it is released from. The binding of NE to its receptor will activate PLC, DAG, IP3 and increase the levels of intracellular Ca2 . Based on this description, which of the following accurately describes the properties associated with this hormone?(I) Membrane-bound receptor model (2) Nuclear-receptor model (3) Unbound hormone (4) Bound hormone (5) Hormone derived from cholesterol a. I and 3 only b. 2 and 4 only c. 1,3,5 only d. 2, 4, 5 only e. I , 2, 3, 4. and 5