All the values of m for which both roots of the equation $x^2 - 2mx + m^2 -1 = 0$ are greater than $-2$ but less than 4 lie in the interval :

Question

( A ) $1 < m < 4$
( B ) $m > 3$
( C ) $-1 < m < 3$
( D ) $-2 < m < 0$