The set of values of $m$ for which $m x ^ { 2 } - 6 m x + 5 m + 1 > 0$ for all real $x$ is (A) $m < \frac { 1 } { 4 }$ (B) $m \geq 0$ (C) $0 \leq m \leq \frac { 1 } { 4 }$ (D) $0 \leq m < \frac { 1 } { 4 }$
The set of values of $m$ for which $m x ^ { 2 } - 6 m x + 5 m + 1 > 0$ for all real $x$ is\\
(A) $m < \frac { 1 } { 4 }$\\
(B) $m \geq 0$\\
(C) $0 \leq m \leq \frac { 1 } { 4 }$\\
(D) $0 \leq m < \frac { 1 } { 4 }$