The figure shows the electric field produced at one position in space by a point

Question

The figure shows the electric field produced at one position in space by a point charge that is not shown. Which of the following statements is correct?

A. The charge is negative and it is located to the right of the point for which the electric field is shown, but its value cannot be determined.
B. The charge is positive and it is located to the left of the point for which the electric field is shown, but its value cannot be determined.    
C. The charge has a value of +900 C, and is located to the left of the point for which the electric field is shown.
D. It is impossible to tell the sign, magnitude, and location of the charge that produces this field.
E. The charge has a value of -900 C, and is located to the right of the point for which the electric field is shown.

I really need the correct answer for this, I'm thinking it's either A or D

Explanation / Answer

Ans:D. It is impossible to tell the sign, magnitude, and location of the charge that produces this field

Explanation:

Charge can be positive or nagative. if the charge is negative then it will be located to the right of the point for which the electric field is shown, but its value cannot be determined. If the charge is positive then it will be located to the left of the point for which the electric field is shown, but its value cannot be determined.   

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