int incomingByte = 0; // for incoming serial data

void setup() {
  Serial.begin(9600); // opens serial port, sets data rate to 9600 bps
  
}

void loop() {
  // send data only when you receive data:
  if (Serial.available() > 0) {
  String menuChoice = Serial.readString();
  Serial.println(menuChoice);
  }
}