[单选题]
A 6.0-V battery maintains the electrical potential differey 1tt,te2y8b yr6e1-qvh rs(3(i u psmnce between qb6f9;0 x;b qmhdhe60 )hftgptwo parallel metal plates separated by 10)60dp;9g;mqbx tef hf b 6qhh.0 mm. What is the electric field between the plates?