In the following sequence of reactions, products (A) to (H) are formed:
The gases (B), (C), and (D), respectively, are:
A. `{:(ul(" (B) (C) (D)")),((a)""HC-=CH" "CO_(2)" "H_(2)):}`
B. `{:(ul(" (B) (C) (D)")),((a)""HC-=CH" "H_(2)" "CO_(2)):}`
C. `{:(ul(" (B) (C) (D)")),((a)""Me--=-Me" "CO_(2)" "H_(2)):}`
D. `{:(ul(" (B) (C) (D)")),((a)""Me--=-H" "H_(2)" "CO_(2)):}`