Mark the letter A, B, C, or D to indicate the word that differs from

A. I’m sure I have acted correctly in this instance, whatever Bob may think.

B. My opinion that Bob had done the wrong thing in this case turned out to be right.

A. If you don't carry on with your education, we'll be unable to help you.

B. We would be willing to support you if you needed help with your studies.

A. a large piece of equipment