Which_symbol_is_used_with_the_set_command_for_command_substitution?$

1.	Which_symbol_is_used_with_the_set_command_for_command_substitution?$
A.	‚Äö√Ñ√∂‚àö√ë‚àö¬®
B.	‚Äö√Ñ√∂‚àö√ë‚àö√Ü
C.	??
D.	_
Answer» C. ??

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