NO₂CH₂COOH > FCH₂COOH > CNCH₂COOH > ClCH₂COOH

FCH₂COOH > NCCH₂COOH > NO₂CH₂COOH > ClCH₂COOH

CNCH₂COOH > O₂NCH₂COOH > FCH₂COOH > ClCH₂COOH

NO₂CH₂COOH > NCCH₂COOH > FCH₂COOH > ClCH₂COOH

A $$ \to $$ R;  B $$ \to $$ P;  C $$ \to $$ S;  D $$ \to $$ Q

A $$ \to $$ Q;  B $$ \to $$ S;  C $$ \to $$ P;  D $$ \to $$ R

A $$ \to $$ R;  B $$ \to $$ S;  C $$ \to $$ P;  D $$ \to $$ Q

A $$ \to $$ Q;  B $$ \to $$ P;  C $$ \to $$ S;  D $$ \to $$ R

CHBr₃

CHI₃

CH(CN)₃

CHCl₃