Which of the following statements is false?

Group of answer choices

There could be up to one pending signal per standard signal type for each process

A user can send a signal to a target process by using the $$kill$$ system call.

A user can write a program that performs nothing even if that process receives a signal other than SIGKILL and SIGSTOP

OS delivers a signal and runs the signal handler defined in the target process

A user can define custom signals and assign numbers from $32$ to $63.$