A die is rolled three times, and the results are $a$, $b$, and $c$ in order. What is the probability that $a \times b \times c = 4$? [3 points]\\
(1) $\frac { 1 } { 54 }$\\
(2) $\frac { 1 } { 36 }$\\
(3) $\frac { 1 } { 27 }$\\
(4) $\frac { 5 } { 108 }$\\
(5) $\frac { 1 } { 18 }$