-81a⁵b⁴c³ ÷ (-9a²b²c) is equal to:

1. -9a³b²c²

2. 3a³b²c²

3. 9a⁴b

4. 9a³b²c²

$-(-pq - \overline{p^2 - pq})$ is equal to:

1. 2pq + p²

2. -p²

3. p²

4. none of these

Statement 1: The expression 2x⁴ - 3x² + $\dfrac{7}{\text{x}}$, x ≠ 0 has no constant term.

Statement 2: In an algebraic expression in terms of one variable, the term(s) independent of the variable is called the constant.

Which of the following options is correct?

1. Both the statements are true.

2. Both the statements are false.

3. Statement 1 is true, and statement 2 is false.

4. Statement 1 is false, and statement 2 is true.

Assertion (A) : 5x + y² - x³, xy + yz + zx, x² - x + 1 are all trinomials.

Reason (R) : An algebraic expression which contains three different terms is called a trinomial.

1. Both A and R are correct, and R is the correct explanation for A.

2. Both A and R are correct, and R is not the correct explanation for A.

3. A is true, but R is false.

4. A is false, but R is true.