In the below circuit, X is given by

A. $${\text{X}} = {\text{A}}\overline {\text{B}} \overline {\text{C}} + \overline {\text{A}} {\text{B}}\overline {\text{C}} + \overline {\text{A}} \overline {\text{B}} {\text{C}} + {\text{ABC}}$$

B. $${\text{X}} = \overline {\text{A}} {\text{BC}} + {\text{A}}\overline {\text{B}} {\text{C}} + {\text{AB}}\overline {\text{C}} + \overline {\text{A}} \overline {\text{B}} \overline {\text{C}} $$

C. $${\text{X}} = {\text{AB}} + {\text{BC}} + {\text{AC}}$$

D. $${\text{X}} = \overline {{\text{AB}}} + \overline {{\text{BC}}} + \overline {{\text{AC}}} $$

Answer: Option A