Gru is attempting to open his car door using the acute lock button on his keychain. He…

Gru is attempting to open his car door using the acute lock button on his keychain. He pushes the button twice, but bis car door does not open. He continues to push the button even though it is likely that the auto lock feature has stopped working, and be will need to open the door manually with his key. This illustrates a
A. confirmation bias
B. mental set
. hindsight bias
D. functional fixedness