What Was the So-Called "Kitchen Cabinet," and What Was One

What was the so-called "kitchen cabinet," and what was one reason why it proved significant?

A) a faction of Calhoun's supporters that actively undermined Jackson's presidency behind closed doors
B) a committee within Jackson's cabinet that morphed into a new political party known as the anti-Masonic party
C) a gathering of expert advisors without ties to the media that helped guide Jackson in making nonpartisan economic decisions
D) an informal group of Jackson's close friends and supporters that convinced him to go back on his pledge to be a one-term president
E) Jackson's cabinet early on in the Eaton affair that provided such sound guidance that he maintained a relatively smooth first term