A, a jailor, has the charge of Z, a prisoner. A, intending to cause Z's death, illegallyomits to supply Z with food; in consequence of which Z is much reduced in strength, but the starvation is not sufficient to cause his death. A is dismissed from his office, B succeeds him. B, without collation with A, illegally omits to supply Z with food, knowing that he is likely thereby to cause Z's death. Z dies. Which of the following judgment applies to both A and B under Section 37 of the Indian Penal Code?