If Biplob and Chumki are each older than both Didar and Annu, Then which of the following additional statements ensures the truth of the conclusion "Alam is older than Annu"?
A
Alam is older than chumki
B
Alam is older than Didar
C
Chumki is older than Biplob
D
ALam is younger than Biplob.
Correct Answer: Alam is older than chumki