At a certain point in space there is a potential of 400 V. (Physics Help)

Hello. i need some help confirming my answers fellas. i got (E). just wanna make sure y'all get the same. thanks in advance for your help.

At a certain point in space there is a potential of 400 V. What is the potential of a +2µC charge at that point in space?
A) 80 x 10^-6 J
B) 800 J
C) 400 J
D) 200 J
E) 8 x 10^-4J

As per defination potential is the work done to bring unit charge from the infinity to that point
=>potential of a +2µC = 2 x 10^-6 x 400 = 8 x 10^-4 J = (E)