Read this excerpt from The Iliad. First give thy faith, and plight a prince's word

Of sure protection, by thy power and sword;

For I must speak what wisdom would conceal,

And truths, invidious to the great, reveal,

Bold is the task, when subject, grown too wise

Instruct a monarch where his error lies;

The term invidious means likely to cause anger or upset. What ideas from the excerpt support this definition?

a. The monarch may become angry because his subject is pointing out the monarh's errors
b. The speaker is bold to speak the truth
c. The monarch has unwisely lied to the people of the kingdom
d. The speaker is trying to speak about something that many will not understand