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How can you protect a metacharacter ( such as the $ character ) from shell interpretation? a . Precede it with a / . b

How can you protect a metacharacter (such as the $ character) from shell interpretation?
a. Precede it with a /.
b. Follow it with a \.
c. Precede it with a $.
d. It cannot be done as metacharacters are essential.
e. Precede it with a \.

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