Which quotation expresses the real reason that Claudius has sent for Rosencrantz and guildenstern

"Some little time, so by your companies

To draw him on to pleasures, and to gather

So much as from occasion you may glean,

Whether aught to us unknown afflicts him thus,

That opened lies within our remedy."

In this quotation, we learn that Claudius is asking Rosencrantz and Guildenstern to exploit their friendship with Hamlet in order to discover what is causing the young man so much unrest. The key word in this quote is "glean."