Assuming That a User Enters 64 as His Score, What

Assuming that a user enters 64 as his score, what is the output of the following code snippet?
Int score = 0;
Scanner in = new Scanner(System.in) ;
System.out.print("Enter your score: ") ;
Score = in.nextInt() ;
If (score < 40)
{
System.out.println("F") ;
}
Else if (score >= 40 || score < 50)
{
System.out.println("D") ;
}
Else if (score >= 50 || score < 60)
{
System.out.println("C") ;
}
Else if (score >= 60 || score < 70)
{
System.out.println("B") ;
}
Else if (score >= 70 || score < 80)
{
System.out.println("B+") ;
}
Else
{
System.out.println("A") ;
}

A) D
B) C
C) B
D) A