Identify if the statement is True, False, or unknown. A child process always has a PID of O. [Choose ] False. Unknown True. A child process always has the same PID as the parent. MC In Unix, ordinary pipes need a parent-child relationship between the communicating processes. [Choose ] A thread has its own thread ID, program counter, register set, and the heap. [Choose ] A process has multiple threads. They all share the same stack. [ Choose ] 4 [Choose ] In order to ensure consistency in a data structure being modified, Deferred cancellation is preferred over asynchronous cancellation