The correct option is B R1 - H2/Lindlar′s catalyst
R2 - Na/liq.NH3
R3 - H2O, H2SO4, HgSO4
R4 - (i) O3 (ii) H2O
R1 - Lindlar's catalyst gives cis product
R2 - Na/liq.NH3 gives trans product
R3 - undergoes oxymercuration-demercuration to give ketone
R4 - Ozonolysis followed by hydrolysis give acid.