Consider a system of equations $ax + by = 0$ and $cx + dy = 0$,where $a, b, c, d \in \{0, 1\}$.
Statement $-1$: The probability that the system of equations has a solution is $1$.
Statement $-2$: The probability that the system of equations has a unique solution is $\frac{3}{8}$.

• A
  Statement $-1$ is true,Statement $-2$ is true,but Statement $-1$ is not the correct explanation for Statement $-2$.
• B
  Statement $-1$ is true,Statement $-2$ is false.
• C
  Statement $-1$ is false,Statement $-2$ is true.
• D
  Both statements are true,and Statement $-1$ is the correct explanation of Statement $-2$.