Read the passage from 'The King's Magic Drum."
When his father had finished and went home the boy also returned, and having had a
good meal, said nothing to his parents, but went to bed. The next morning he got
some of his brothers, and after his father had finished getting the daily supply, they
went to the tree and collected much foo-foo and soup, and so broke the Ju Ju.
At daylight the tortoise went to the tree as usual, but he could
not find it, as during the
night the whole bush had grown up, and the foo-foo tree was hidden from sight.
Which theme is shaped by these details?
The King's Magic
Drum

(A) wisdom comes with age
(B) it is better to listen than to speak
(C) maximum effort will lead to maximum gains
(D) greed destroys good