The bonfire was by this time beginning to sink low, for the fuel had not been of that substantial sort which can support a blaze long. Most of the other fires within the wide horizon were also dwindling. Attentive observation of their brightness, color, and duration would have revealed the quality of the material burnt, and of this latter, to some extent the natural produce of the district in which each bonfire was situated. The clear kingly effulgence that had characterized the majority expressed a heath and furze country like their own, which in one direction extended an unlimited number of miles: The rapid flares and extinctions at other points of the compass showed the lightest of fuels—straw, beanstalks, and the usual waste from arable land. Select the correct answer.

What is the allusion in this passage?

You may need to use a dictionary.

A. No allusion in passage
B. Arable land

C. Rapid flares

D. Kingly effulgence