Question: crypt test hello. What does this command do ? ? a . . It encrypts hello into heltest.crypt using key test b .

crypt test hello. What does this command do?? 
 
a..
It encrypts hello into heltest.crypt using key test
b..
It encrypts test into heltest.crypt using key hello
c..
It decrypts heltest.crypt into test using key hello
d..
It decrypts heltest.crypt into hello using key test

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