17. Which compound will not exhibit optical activity? (Note that these are all Fischer projections.) 1444 COOCH COOCH COOH COOH H- H. O- -OH HO- HO I (a) H- (b) HO- -H- (c) HO (d) Cl- H- HO HO H- COOH COOH COOH COCH;CH

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