The correct option is
A P
Macronutrients are nutrients that are required in larger amounts by plants and other living organisms. Carbon(C), hydrogen (H), nitrogen (N), oxygen (O), phosphorous (P), potassium (K), calcium (Ca), sulfur (S), and magnesium (Mg) are macronutrients.
Micronutrients are nutrients that are required in smaller amounts. Boron (B), chlorine (Cl), manganese (Mn), iron (Fe), zinc (Zn), copper (Cu), molybdenum (Mo), nickel (Ni). and cobalt (Co) are categorized as micronutrients.
Thus, the correct answer is option (A).