Question: Let W = A - > B be a valid wff where A and B are also wffs . Which statement is most accurate? If

Let W

=

- >

B be a valid wff where A and B are also wffs

.

Which statement is most accurate? If A is valid then so is B A and B can be valid or invalid If A is valid then B is invalid If A is invalid then B must be invalid

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