nayana-c1.867c992ae9100904cc61c84591adf0f8f863e0387e30f0d0dbc86640e9f50a1a.en.validation.3752

The task

Which of the following studies investigates the impact of arbuscular mycorrhizal fungi on plant secondary metabolites? A. Moreira FM, Siqueira JO. Micorrizas In: Microbiologia e bioquimica do solo Lavras: UFLA. 2006. B. Zubek S, Rola K, Szewezyk A. Enhanced concentrations of elements and secondary metabolites in Viola tricolor L. induced by arbuscular mycorrhizal fungi. C. Vermerris W, Nicholson R. Phenolic Compound Biochemistry. Netherlands: Springer 2006. D. Haslam E. Vegetable tannins - lessons of a phytochemical lifetime. Phytochemistry 2007. Return only the single uppercase letter of the correct option.