Consider a 1-m-internal-diameter water channel made of finished concrete (n = 0.012). The channel slope is 0.002. For a flow depth of 0.32 m at the center, determine the flow rate of water through the channel.
A) 1.27 m³/s
B) 0.86 m³/s
C) 1.51 m³/s
D) 1.05 m³/s