In the following question, a part of the sentence is given in bold. It is then followed by three sentences which try to explain the meaning of the phrase given in bold. Choose the best set of alternatives from the five options given below each question which explains the meaning of the phrase correctly without altering the meaning of the sentence.

He calls home once in a blue moon.

 

(I) He calls home whenever he wants to.

(II) He calls home rarely.

(III) He calls home whenever the moon is blue.