The following is financial information describing the six operating segments that make up Chucktown Sauce Company $($in thousands$)$:

Consider the following questions independently. None of the six segments have a primarily financial nature.

a$.$ What minimum revenue amount must any one segment generate to be of significant size to require disaggregated disclosure?

b$.$ If only Red, Blue, and Green necessitate separate disclosure, is Chucktown Sauce Company disclosing disaggregated data for enough segments?

c$.$ What volume of revenues must a single customer generate to necessitate disclosing the existence of a major customer?

d$.$ Now assume each of these six segments has a profit or loss $($in thousands$)$ as follows. Which segments warrant separate disclosure?