Which is the best alternative considering some of the statements are true (T) and others are false (F) ?

I- Modern building façades might be dangerous.

II- The sensors show when the glass is breaking or falling.

III- A glass fissure is not easily seen in the beginning.

IV- The sensors can help control the building temperature.

V- A change in the signal indicates that the pane is not defective.

VI- Changes in temperature do not have any influence on the size of glass fissures.

The best alternative is