Line AC and line BD are diameters of circle F. What is the arc of angle ACD

According to given diagram:
arcBCD=180 degree
and ARC AB= 70 degree:
So
arc ACD= arcAB+arcBCD
[tex]\begin{gathered} \text{ACD}=180+70 \\ \text{ACD}=250^{\circ} \end{gathered}[/tex]Hence B is correct option.