Consider the following statements with respect...

Consider the following statements with respect to user-level threads and kernel-supported threads

  1. context switch is faster with kernel-supported threads
  2. for user-level threads, a system call can block the entire process
  3. Kernel supported threads can be scheduled independently
  4. User level threads are transparent to the kernel

Which of the above statements are true?

A . (2),(3) and (4)
B. (1) and (4)
C . (2) and (3)
D. (1) and (3)
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