You are given a math word problem and you are supposed to make use of mathematical concepts like probability, combinatorics, linear equations, sequences/series, or simple operators like addition, subtraction, division, or multiplication to answer the given question. Choose the best option from the 5 given options and report that option.

Question: For what value of "k" will the equation (2kx2 + 5kx+2)=0 have equal roots?

Option A: 2/7

Option B: 9/4

Option C: 16/25

Option D: 7/1

Option E: 7/2
Option C