A tragic story

In a village, there lived a couple. After so many years of marriage, they were not 

blessed by children. They have done each and every thing. But still it was of no

use.

They have almost left the hopes about this matter. Soon their worry got ended

 and they were blessed by a son.

The son was cute. His parents were extra careful about him. His demands were 

met instantly. 

Son was little grown up now. He was taking small steps to walk and had the habit

 of tasting everything he see.

One day his father was in a hurry to go to office. He had brought rat poison last

 night and had kept it open on the table.

His wife was busy in the kitchen. Hurriedly he said about the rat poison that he

 kept it open on the table.

As wife was busy, she thought she will keep the rat poison in a safe place as soon

 as she gets free.

Their son was playing with the ball. When playing, ball had gone to the corner. To

 fetch it, he crawled under the table.

The table got moved and the rat poison which was kept open fell on the ground. 

Son was curious by seeing the cakes of rat poison and instantly he cut the cake

 and started chewing it.

As his mother was busy in the kitchen, she was not aware of what had happened.

 Soon son started choking continuously and died.

Father came back from office and saw his son laying down unconscious. He rushed

 to hospital. But it was too late and they have lost their son.

Now the blame game starts. 

Father accuses mother for being so careless about child. Mother accused father

 for keeping the rat poison open.

Whom to blame?

 Both of them are responsible for the tragedy happened according to me.