$\dfrac{7}{9} - \dfrac{5}{18}$ is equal to

1. $\dfrac{2}{18}$

2. $\dfrac{2}{9}$

3. $\dfrac{1}{2}$

4. $\dfrac{11}{18}$

Anshul eats $\dfrac{4}{7}$ of a pizza. The fraction of the pizza left is

1. $\dfrac{3}{7}$

2. $\dfrac{2}{7}$

3. $\dfrac{5}{7}$

4. $\dfrac{1}{7}$

Statement I: $3\dfrac{4}{7}$ is a mixed fraction.

Statement II: A natural number added to a proper fraction forms an improper fraction.

1. Statement I is true but statement II is false.

2. Statement I is false but statement II is true.

3. Both Statement I and statement II are true.

4. Both Statement I and statement II are false.

Statement I: An orchard has a total area of 1000 m². Given that 200 m² of the orchard has been used for mango trees, 500 m² has been used for apple trees and the remaining area is unused. The fraction of the orchard that is unused is $\dfrac{3}{10}$.

Statement II: All natural numbers can be written as improper fractions.

1. Statement I is true but statement II is false.

2. Statement I is false but statement II is true.

3. Both Statement I and statement II are true.

4. Both Statement I and statement II are false.