$\dfrac{1}{7} + \dfrac{4}{14}$ is equal to

1. $\dfrac{5}{14}$

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

3. $\dfrac{3}{14}$

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

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

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

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

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

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

The fraction whose numerator is the smallest odd prime number and denominator is the smallest composite number is

1. $\dfrac{3}{4}$

2. $\dfrac{2}{4}$

3. $\dfrac{4}{3}$

4. $\dfrac{4}{2}$

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.