The first eight moons of Saturn were discovered with direct telescopic observation, but long-exposure photographic

The first eight moons of Saturn were discovered with direct telescopic observation, but long-exposure photographic techniques in the early twentieth century led to the discovery of six more moons, so it nearly doubled the number of moons Saturn has.

A) so it nearly doubled the number of moons Saturn has
B) and it nearly doubled the amount of moons Saturn known to has
C) nearly doubling the number of moons Saturn has
D) nearly doubling the amount of moons Saturn has
E) nearly doubling the number of moons Saturn was known to have



OA E

Source: Magoosh