=+3. Karl was late to his interview because he left the house late and did not use his GPS for directions. If Karl is making use of the self-serving bias, which of the follow- ing statements will he use to explain his lateness?

a. "I thought I knew where I was going, but I got lost."

b. "I spent too much time trying to find a tie that matched this shirt."

c. "My GPS told me to turn left when I should have turned right."