With a Per-Worker Production Function Y = K^1/2, the Steady-State

With a per-worker production function y = k^1/2, the steady-state capital stock per worker (k*) as a function of the saving rate (s) is given by:

A) k* = (s / δ) ².
B) k* = (δ / s) ².
C) k* = s / δ.
D) k* = δ / s.