Choose the correct answer. Which sentence best expresses the central idea of the passage?

A.
The goal of the ambitious Cassini mission, funded by different space organizations, is to explore the ringed planet Saturn and study it in detail.
B.
NASA, the European Space Agency (ESA), and the Italian space agency, Agenzia Spaziale Italiana (ASI) collaborated in order to launch the Cassini mission that would study the planet Saturn.
C.
NASA launched the Cassini spacecraft with the intention of studying the planet Saturn and its moons.
D.
The Cassini mission, funded by different space organizations, was launched in order to study the different moons of the planet Saturn