The provided code snippet appears to be part of an embedded systems program written in C, which is intended to configure and initialize certain hardware features. The task is to analyze how the program's behavior differs from the expected behavior.

Here is a cleaned-up version of the task:

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Analyze the provided code snippet and identify how the program's behavior differs from the expected behavior:

```c
void Sound_Init(void) {
unsigned long volatile delay;
SYSCTL_RCGC2_R = 0x00000001; // activate port A
delay = SYSCTL_RCGC2_R; // allow time for clock to stabilize
GPIO_PORTA_AMSEL_R &= ~0x20; // disable analog on PA5
GPIO_PORTA_PCTL_R &= ~0x00F00000; // regular function on PA5
GPIO_PORTA_DIR_R |= 0x20; // make PA5 an output
GPIO_PORTA_DR8R_R |= 0x20; // enable 8 mA drive on PA5
GPIO_PORTA_AFSEL_R &= ~0x20; // disable alt funct on PA5
GPIO_PORTA_DEN_R |= 0x20; // enable digital I/O on PA5
NVIC_ST_CTRL_R = 0; // disable SysTick during setup
NVIC_ST_RELOAD_R = 39999; // reload value for 500 us (assuming 80MHz clock)
NVIC_ST_CURRENT_R = 0; // clear current register
NVIC_SYS_PRI3_R = NVIC_SYS_PRI3_R & 0x00FFFFFF; // priority 0
NVIC_ST_CTRL_R = 0x00000006; // enable with core clock and interrupts
EnableInterrupts(); // enable global interrupts
}
```

A. The SysTick is configured without interrupt, as expected, but it is never activated.
B. The priority is not correctly set in the PRIORITY register.
C. The SysTick is configured with an interrupt, as expected, but it is never activated.
D. Interrupts are generated at the wrong frequency.

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Please select the option that best explains the discrepancy in the program's behavior.