Task: Class Definition Understanding (ontology: Sciences/Biology)

Which of the following definitions best describes 'regulation of xanthone-containing compound biosynthetic process'?

A. Any process that activates or increases the frequency, rate or extent of xanthone-containing compound biosynthetic process.
B. Any process that stops, prevents or reduces the frequency, rate or extent of xanthone-containing compound biosynthetic process.
C. Any process that modulates the frequency, rate or extent of xanthone-containing compound biosynthetic process.
D. Any process that modulates the frequency, rate or extent of polyketide biosynthetic process.

Answer: Any process that modulates the frequency, rate or extent of xanthone-containing compound biosynthetic process.