Question: Let P => Q => R, S => T => U and { Q } code { T } be true. Which of the following

Let P => Q => R, S => T => U and { Q } code { T } be true. Which of the following triples are true? Give a short justification for each.

a) { P } code { S }

b) { P } code { U }

c) { R } code { S }

d) { R } code { U }

e) { Q } code { S }

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