According to the Marshall-Lerner condition if a country’s currency depreciates its trade balance will worsen if ?

A. elasticity of demand for exports = 0.9; elasticity of demand for imports = 0.4
B. elasticity of demand for exports = 0.7; elasticity of demand for imports = 0.3
C. elasticity of demand for exports = 0.5; elasticity of demand for imports = 0.7
D. elasticity of demand for exports = 0.3; elasticity of demand for imports = 0.6