Select the statement, which is the logical equivalent to the statement given below: It is not true that both Rama and Ravana fought the battle.
1
Rama fought the battle and Ravana fought the battle.
2
Rama fought the battle and Ravana didn’t fought the battle .
3
Rama didn’t fought the battle and Ravana fought the battle.
4
Rama fought the battle or Ravana fought the battle .