What does the following code do? gpio_a->ct rl_reg *((char *)(0x10AA)); You may assume the variable names are good indicators of their purpose. A. Writes the contents of the byte stored at memory address Ox10AA to the control register of GPIO port A, this will only set the lowest 8 bits in the control register. B. Defines the variable ctrl_reg of the structure gpio_a as a pointer to a character. C. Tries to write data to the GPIO port, but generates a compiler error because the memory address is misaligned. D. Writes the value Ox10AA to the control register of GPIO port A