He did n't even know how badly he was hurt . I must have looked so scared for him that it convinced him to go to the hospital . I think we got a B on the project , thanks to the twins who made some order out of Carl 's crap code . So I like to think that this intermittent error in Word was caused by my teammate Carl , the speed junkie .

Generate a question about the above context.
Why did Carl make an error to the code ?
Available options:
1). Because he works too fast .;
2). Because he did what the twins told him to .;
3). Because he is inexperienced .;
4). None of the above choices .;