I don't know where is wrong in my calculation. The correct answer is c but I get d

2008/31) An electron is accelerated horizontally from rest in a television picture tube by a potentia 'ence of 5500 V. It then passes between two horizontal plates 6.5 cm long and 1.3 cm apart that have : ltial difference of 250 V. At what angle 6 will the electron be travelling after it passes between the plates' 16 5.70 3.5 [1 [3