"The majority of shoplifters seem to be youngsters, middle-aged or even elderly people who, in a moment of confusion,
.................... (slip) something into their bags and ..................... (forget) to pay for it. Some stores are in fact doing their best to separate the real thieves from those who have no intention of stealing."
Please advise the correct form of tenses to be used based on the words in brackets. If students come up with the following answers, which is correct?
(a) slip, forget
(b) slipped, forgot
(c) would slip, would forget