Read the following context and choose the best option to answer the question.
Context: Work was in the Melbourne Central office tower , and as long as you took a clipboard with you and looked like you were going to a meeting , no - one was the wiser . I worked in the IT department , and bringing shopping back was a cinch as there were two entrances , one of which was through the mailroom . If you were friends with the mailroom guys , you could walk in through the mailroom , stash your shopping with them , and collect it on your way out after work .
Question: What may be the reason for having to stash shopping bags ?
Options: 
- Because they got new items before they were released .
 - Because they were n't supposed to shop on the clock .
 - Because they used a discount they are n't supposed to .
 - Because they stole .


Because they were n't supposed to shop on the clock .