Which Arduino instruction is required to display the results on serial monitor? O a. digitalWrite() O b. Serial.begin() O c. Serial.printlno O d. analogWrite are general purpose registers of 8086 microprocessor are not used for addressing. O a. SI, DI, SP, BP O b. AX, BX, CX, DX O c. AX, CX, DX O d. SI, SP, BX, BP