A General Reaction Written as 2A + 2B $\rightarrow$ C + 2D Is Studied and Yields the Following Data

A general reaction written as 2A + 2B $\rightarrow$ C + 2D is studied and yields the following data.
-What is the numerical value of the rate constant?

A) 4.00 * 10^-1
B) 4.00* 10^-2
C) 4.00 * 10^-3
D) 4.00 * 10^-4
E) none of these