The correct options are
A It is bicyclic planar molecule
D It is antiaromatic compound
The compound name is Pentalene and its a bicyclic planar compound.
By using Huckel's rule,
(i) It is cyclic compound
(ii) It is a planar compound
(iii) It has extended conjugation
(iv) It has 8 π electrons which follows 4n rule where n is 2.
Hence it is an antiaromatic compound.