Say whether the following sentences are tautological, contradictory or contingent. If possible, use a truth table to justify your answer. Business…

1. Say whether the following sentences are tautological, contradictory or contingent. If possible, use a truth table to justify your answer.
A. Business is business.
B. If you can dream it then you can do it.
C. If you can dream it then you cannot dream it.
D. She does what she does.
2. Say whether the following arguments are valid or invalid.
a. AÚ~M