After seeing this information, you will choose between the urns yourself.
You will only choose between the urns once per block.
However, 4 marbles will then be drawn randomly from this chosen urn and every time a marble is drawn,
it will be put back into the urn before the next marble is drawn.
Thus, you can earn the same amount of points as Type A participants per block.
In contrast to Type A participants, you will not see the colour of the marbles that are drawn and thus,
you will only know by the end of the experiment how many points you’ve earned.