Read the sentence.

Although an ancient material, charcoal remains extremely useful in the modern world.

what does the information presented in the sentence reveal about the author's point of view?
a. the author believes that charcoal is used more in the modern world.
b. the author believes that charcoal is used more in the modern world.
c. the author thinks that charcoal was more important to people during ancient times.
d. the author thinks that charcoal was more important to people during ancient times.