Let \( a, b, c \) be positive integers in arithmetic progression such that the equation \( ax^2 + bx + c = 0 \) has only integer solutions. Then which of the following statements is (are) TRUE?
For \( x \in \mathbb{R} \), the number of real roots of the equation \( 3x^2 - 4\lvert x^2 - 1 \rvert + x - 1 = 0 \) is ______.