TC homework question session 2

Because they had expected the spacecraft Voyager 2 to be able to gather data only about the planets Jupiter and Saturn, scientists were _____the wealth of information it sent back from Neptune years after leaving Earth.

A disappointed in
B concerned about
C confident in
D elated by
E anxious for

  1. Remove choices: done
  2. Support/contrast: because , support
  3. Look for clues: because they were expecting something from a spacecraft
  4. Do the math: so now the spacecraft did that task crossing those two planets and did not serve its purpose , that would make scientists disappointed n pissed off probably
  5. Choose close answers: A would be closest

I have solved the question stepwise as greg mentions to find out the error. where exactly I am wrong in thought process