A 50-year-old female presented with mild to moderate unilateral headache which becomes severe occasionally along with fever, jaw pain and visual disturbances, malaise, fatigue and weight loss. On examination, scalp tenderness was noted. Lab findings revealed normocytic normochromic anemia, elevated ESR and raised ANA titers. Biopsy was taken from the temporal aery. Which of the following cells are most impoantly involved in the pathogenesis of the above disease: –