R is the set of positive odd integers less than 10, and S is the set of the squares of the integers in R. How many elements does the intersection of R and S contain ? Choose the correct choice from the following:
A) None B) Two C) Four D) Five E) Seven
squares &lt; 10 {1,4,9}   S = {1,9}   R = {1,3,.....10}   Hence Two.
<result>B</result>
R is the set of positive odd integers less than 10, and S is the set of the squares of the integers in R. How many elements does the intersection of R and S contain ?