"Class Aggregate" Is Incorrect

"class Aggregate" is incorrect. Choose the correct line so that this program prints Granite: weight=25.0 value=4 numKind=7
Public class Inherit
{
Abstract class Stone
{
Protected float weight = 13;
Protected int value = 4;
Abstract public String toString( ) ;
}
Class Aggregate
{
Protected int numKind;
}
Class Granite extends Aggregate
{
Granite( )
{
Weight = 25; numKind = 7;
}
Public String toString( )
{
Return "Granite: weight="
+ weight + " value="
+ value + " numKind="
+ numKind;
}
}
Inherit( )
{
Granite g = new Granite( ) ;
System.out.println(g) ;
}
Public static void main(String[ ] args)
{
New Inherit( ) ;
}
}

A) abstract class Aggregate {
B) abstract class Aggregate extends Granite {
C) abstract class Aggregate extends Stone {
D) class Aggregate extends Stone {
E) none of the above