text: In the following you will be presented with multiple choices between two options E and Z.
  Please name which option you would prefer by pressing the corresponding key.
  
  You have the choice between receiving 500$ immediately (press E) or receiving 550$ in one year (press Z). You press <<E>>.
  You have the choice between receiving 500$ immediately (press E) or receiving 600$ in one year (press Z). You press <<E>>.
  You have the choice between receiving 500$ immediately (press E) or receiving 750$ in one year (press Z). You press <<E>>.
  You have the choice between paying 500$ immediately (press E) or paying 550$ in one year (press Z). You press <<E>>.
  You have the choice between paying 500$ immediately (press E) or paying 510$ in one year (press Z). You press <<Z>>.
  You have the choice between receiving 5000$ immediately (press E) or receiving 5500$ in one year (press Z). You press <<E>>.
  You have the choice between receiving 5000$ immediately (press E) or receiving 6000$ in one year (press Z). You press <<E>>.
  You have the choice between receiving 5000$ immediately (press E) or receiving 7500$ in one year (press Z). You press <<Z>>.
  You have the choice between receiving 500$ in one year (press E) or receiving 750$ in two years (press Z). You press <<E>>.
  You have the choice between receiving 500$ immediately (press E) or receiving 1000$ in two years (press Z). You press <<E>>.
  You have the choice between receiving 500$ immediately (press E) or receiving 750$ in one year (press Z). You press <<E>>.
  You have the choice between reduce 500$ immediately (press E) or reduce 750$ in one year (press Z). You press <<E>>.