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Given below are two statements : Statement (I) : Potassium hydrogen phthalate is a primary standard for standardisation of sodium hydroxide solution. Statement (II) : In this titration phenolphthalein can be used as indicator. In the light of the above statements, choose the most appropriate answer from the options given below.

1. Both Statement I and Statement II are incorrect.
2. Both Statement I and Statement II are correct.
3. Statement I is incorrect but Statement II is correct.
4. Statement I is correct but Statement II is incorrect.

Correct answer: Both Statement I and Statement II are correct.

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