Read the section "NASA Decides To Use Private Space Companies." Select the sentence from the section that shows WHY the Demo-2 launch site is special?

A
In 2014, NASA paid SpaceX and Boeing to send astronauts to the ISS on six different missions.
B
If it passes, NASA will approve Crew Dragon and Falcon 9 for sending humans to space.
C
Pad 39A is famous because most of NASA's missions took off from there.
D
Then, the astronauts took an elevator up about 18 stories, where they climbed into the capsule.
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Iam not sure sorry

Syllable added to a root word to change its meaning : affixan independent word--example run,walk,book : free morphemeaffix that gives grammatical meaning such as tense or number : inflectiona word part that must attach to a word in order to be usable : bound morphemedegree of comparison formed by adding -er or more to an adjective : comparativedegree of comparison formed by adding -est or most to an adjective : superlativeaffix added to the beginning of a word : prefixaffix added to the end of a word : suffixroot word of lovable : lovetwo roots used together to form one word : combining form