A 7.4 kg solid sphere made of metal whose density is 2300 kg/m3, is suspended by a cord. When the sphere is immersed in a liquid of unknown density, the tension in the cord is 18 N. The density of the liquid is closest to:
A. 1700 kg/m3
B. 1600 kg/m3
C. 1500 kg/m3
D. 1400 kg/m3
E. 1300 kg/m3
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