The correct option is A 1000
Since the cake is being equally divided amongst the 4 brothers, so each brother has consumed 14 of the cake.
If the weight of one piece is 250 grams, therefore, the weight of the entire cake would be four times the piece of one cake.
So, the total weight of the cake is
4×250 grams = 1000 grams
The total weight of the cake is 1000 grams.