4 0.5 / 1 pts 6.3-2. Pure Aloha and CSMA. Which of the following statements is true about both Pure Aloha, and CSMA (both with and without collision detection? Pure Aloha and CSMA can achieve 100% channel utilization, in the case that all nodes always have frames to send. Pure Aloha and CSMA can achieve 100% utilization, in the case that there is only one node that always has frames to send There can be times when the channel is idle, when a node has a frame to send, but is prevented from doing so by the medium access protocol. There can be simultaneous transmissions resulting in collisions