The series. of numbers. (1,1/2,1/3,1/4 .............1/1972) is taken. Now two numbers are taken from this series (the first two) say x, y. Then the operation x+y+x.y is performed to get a consolidated number. The process is repeated. What will be the value of the set after all the numbers are consolidated into one number?

(a)1970 (b)1971
(c)1972 (d)none of these