Consider the equation z2=4iz^2 = 4iz2=4i. Which of the following is a solution for zzz?
2+2i\sqrt{2} + \sqrt{2}i2+2i
2+2i2 + 2i2+2i
1+i1 + i1+i
2−2i\sqrt{2} - \sqrt{2}i2−2i