Use the Following Information to Answer the Question(s) Below

Use the following information to answer the question(s) below:
(1) the rate of depreciation is 10% per year,
(2) the population growth rate is 2% per year, and
(3) the growth rate of technology is 3% per year.
-Refer to the information above.Which of the following represents the level of investment needed to maintain constant capital per effective worker (K / NA) in this economy?

A) 0.02K
B) 0.03K
C) 0.05K
D) 0.10K
E) 0.15K