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What item(s) below is/are true statement(s) about the process control block for a given process? It stores the address of the next instruction to be processed by a different process It contains linked list pointers used in ready and wait queues It determines which process to execute next. It includes information on the process's state. Portability, the ability of User programs to run across different operating systems, Is hindered by what items: 1. CPUs have varying instruction sets. 2. Each operating system can have its own binary formats for object and executable files. 3. Virtual machine availability for programming languages across operating systems. 4. System calls vary among operating systems