48. SPI Data Frame

Which waveform will be displayed on DSO? (after executing the following code)

Arduino code:

#include <SPI.h>

void setup() {
  SPI.begin();
  SPI.beginTransaction(SPISettings(400000, MSBFIRST, SPI_MODE3));
  delay(2000);
}

void loop() {

  digitalWrite(SS, LOW);
  SPI.transfer(0b10101111);
  digitalWrite(SS, HIGH);

  while (1);
}