Three angles of a triangle are x – 10^{\circ}, x + 20^{\circ} , 2x – 30^{\circ} . Find each angles.

Question

( A ) 80^{\circ},40^{\circ},45^{\circ}
( B ) 80^{\circ},50^{\circ},40^{\circ}
( C ) 40^{\circ},70^{\circ},70^{\circ}
( D ) 90^{\circ},40^{\circ},40^{\circ}