Statement (I): The specific fuel consumption of a Cl engine is lower than that of an SI engine.
Statement (II): For the same power, a Cl engine is bigger in size than an SI engine.
1. Both Statement (I) and Statement (II) are individually true and Statement (II) is the correct explanation of Statement (I)
2. Both Statement (I) and Statement (II) are individually true and Statement (II) is NOT the correct explanation of Statement (I)
3. Statement (I) is true but Statement (II) false
4. Statement (I) is false but Statement (II) is true