Please help im desperate for my grade to go up

A.) 6iV5

B.) i=V-1 or -1

C.) 11-2i

D.) 10+10i

Step-by-step explanation:

The correct option is 4. The measure of minor arc BD is 100°.

Step-by-step explanation:

Given information: ∠BCA=40° and ∠BCD is a circumscribed angle of circle A.

Since ∠BCD is a circumscribed angle of circle A, therefore the line AC bisects ∠BCD.

Let the measure of minor arc BD be x. So, the measure of major arc BD is 360-x.

According to the properties of intersection of arcs outside the side the circle,

The measure of minor arc BD is 100°. Therefore correct option is 4.