The yield (%) for each step is

1.	The yield (%) for each step is
A.	P 10, Q 7.2, R 4.5, S 2.0
B.	P 34, Q 24, R 15, S 1
C.	P 3.4, Q 2.4, R 1.5, S 0.1
D.	P 100, Q 71, R 44, S 29
Answer» E.

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The yield (%) for each step is

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