Suppose $x_1, x_2, x_3$ are the roots of polynomial $P(x) = x^3 - 6x^2 + 5x + 12$
The sum $|x_1| + |x_2| + |x_3|$ is

(A): $4$ (B): $6$ (C): $8$ (D): $14$ (E): None of the above.
1. **Identify the roots of the polynomial:**
   Given the polynomial \( P(x) = x^3 - 6x^2 + 5x + 12 \), we need to find its roots. By the Rational Root Theorem, possible rational roots are the factors of the constant term (12) divided by the factors of the leading coefficient (1). Thus, the possible rational roots are \( \pm 1, \pm 2, \pm 3, \pm 4, \pm 6, \pm 12 \).

2. **Test potential roots:**
   By testing \( x = -1 \):
   \[
   P(-1) = (-1)^3 - 6(-1)^2 + 5(-1) + 12 = -1 - 6 - 5 + 12 = 0
   \]
   Therefore, \( x = -1 \) is a root.

3. **Factor the polynomial:**
   Since \( x = -1 \) is a root, we can factor \( P(x) \) as:
   \[
   P(x) = (x + 1)(x^2 - 7x + 12)
   \]

4. **Factor the quadratic polynomial:**
   Next, we factor \( x^2 - 7x + 12 \):
   \[
   x^2 - 7x + 12 = (x - 3)(x - 4)
   \]
   Therefore, the complete factorization of \( P(x) \) is:
   \[
   P(x) = (x + 1)(x - 3)(x - 4)
   \]

5. **Identify all roots:**
   The roots of the polynomial are \( x_1 = -1 \), \( x_2 = 3 \), and \( x_3 = 4 \).

6. **Calculate the sum of the absolute values of the roots:**
   \[
   |x_1| + |x_2| + |x_3| = |-1| + |3| + |4| = 1 + 3 + 4 = 8
   \]

The final answer is \(\boxed{8}\).