Examination

A question had appeared in an examination which read, "Give four uses of breast milk?" A student began to answer the question.

1. No need to boil.
2. Cats can't steal them.
3. Available whenever necessary.

But the fourth point eluded him. When there were barely a couple of minutes for the exam to close the much required fourth point flashed to his mind. So he completed the answer by writing

Available in attractive containers.