a. Complete the following lines of code to use the ADC module to sample analog input channels and store the results. Assume that relevant GPIO and ADC registers have been initialized correctly. ADC conversion is to be initiated (i.e., triggered or started) by software. Polling is to be used to determine when the ADC has completed all conversions. main() { int i; unsigned short results [10]; // Array to store ADC results // Sample Sequence Input Multiplexer Select (SSMUX1) ADCO SSMUX1_R = 0x2143; // Sample Sequence Control (SSCTL1) ADCO_SSCTL1 R = 0x0600; // Start ADC conversion ADCO PSSI R = // Wait for the ADC to complete all of its conversions // and then clear the status flag while (ADCO_RIS_R & == 0) { } ADCO_ISC_R = // Store the converted values into the results array for (i=0; i < { ; i++) // Your code for reading and storing results } b) Based on information provided in part a), which analog input channels (AIN#) are sampled by the ADC?