What are the sign and units digit of the product of all the odd negative integers strictly greater than $-2015$?

$\textbf{(A) }$ It is a negative number ending with a 1. 
$\textbf{(B) }$ It is a positive number ending with a 1. 
$\textbf{(C) }$ It is a negative number ending with a 5. 
$\textbf{(D) }$ It is a positive number ending with a 5. 
$\textbf{(E) }$ It is a negative number ending with a 0.
Since $-5>-2015$, the product must end with a $5$.
The multiplicands are the odd negative integers from $-1$ to $-2013$. There are $\frac{|-2013+1|}2+1=1006+1$ of these numbers. Since $(-1)^{1007}=-1$, the product is negative.
Therefore, the answer must be $\boxed{\text{(\textbf C) It is a negative number ending with a 5.}}$
Alternatively, we can calculate the units digit of each group of 5 odd numbers using modular arithmetic.