Which of the Following Is NOT an Accomplishment of the Rosetta

Which of the following is NOT an accomplishment of the Rosetta mission to Comet Churyumov-Gerasimenko (C-G) ?

A) Rosetta matched orbits with Comet C-G and flew alongside
B) Rosetta dropped the Philae lander on Comet C-G
C) Rosetta took close-up images of Comet C-G and sent them back to Earth
D) Rosetta took samples of the surface material of Comet C-G and sent them back to Earth
E) Rosetta turned off the spacecraft systems to save power far from the Sun, and turned them back on as it got closer to the Sun
Section 13.4: The Origin and Fate of Comets and Related Objects