Read “My Heart Leaps Up When I Behold” by William Wordsworth. Which of these themes does the poem contain?
 My heart leaps up when I behold
 A rainbow in the sky:
 So was it when my life began;
 So is it now I am a man;
 So be it when I shall grow old,
 Or let me die!
 The Child is father of the Man;
 And I could wish my days to be
 Bound each to each by natural piety.
 A.love of nature
 B.the cycle of life
 C.adoration of God
 D.the wisdom of old age