Dr. Sandy Robertson worked out following reaction sequence:
Q. Select true statament (S)

Options

A. when D is treated with `D_(2)` Pd `BaSO_(4)` it gives cis alkene
B. when D is treated with Na and liq. `NH_(3)` it gives trans alkene
C. both
D. none

Answer

C

Explanation

(D). Syn addition
(D) is terminal alkyne so in will not give birch reduction, it will form salt `Ph-C-=C^(-)Na^(+)`