A: Why are you thinking of closing the factory?
B: It’s because of my investment having gone down the drain.
B implies

A

that he hid currencynotes in the pipes thatled to the drain.

B

that the drain gulped up his currency due to heavy rain.

C

that he could not estimate the length or depth ofthe pipes that led to the drain.

D

that all the moneyhe had invested in the factory was totally wasted.