Which of the following is true about stack pointer?

Stack pointer contains the address of the top of the stack memory
Stack pointer is an 8-bit register
Stack pointer stores data permanently
Stack pointer is initialized after stack operation
Stack pointer contains the address of the top of the stack memory  Stack pointer is initialized before stack operation, it is a 16-bit register that stores data temporarily. It follows a LIFO operation. So, it contains the address of the top of the stack memory.

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