matatica software

What does the following script do? c=0; For[i=1, i= 2, c=c+1]]; Print[c]; it calculates the number of all integers n from 1 to 100, such that n and n+1 have the same number of divisors it calculates the number of all integers n from 1 to 100 such that n and n+1 have at least two common divisors it finds all the integers n such that n and n+1 have at least two common divisors None of the these