Taking into consideration the last paragraph of the article (lines 76-86), one can say that currentiy Musk's main ambition is to (A) produce airplanes as well. (B) make a rocket cost effective through reusability. (C) reduce the cost of the Falcon 9 in $43 million per flight. (D) make rockets 100 times cheaper than they are now. (E) save 30% of what is now spent with the project in future launches.
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