Positive integer x has m factors; 3x has 3 factors; Which of the following values can m take?
I. 1
II. 2
III. 3 Select:  A) I or III  B) II or III  C) I or II  D) I only is true  E) II only is true
Squares have odd number of factors.The square which is a multiple of 3 is 9.   3 has factors 1,3 .   Therefore 2 factors   Answer II only is true
<result>E</result>
Positive integer x has m factors; 3x has 3 factors; Which of the following values can m take?
I. 1
II. 2
III. 3