1*1=?, please choose the correct answer from the following options!

Buzz... 

The chainsaw gears spin rapidly, the mechanical hum piercing the eardrums. Under the fast-rotating gears, Alexander raises his face. 

In the dim internet café environment, the screen glows with a cold white light, casting a sharp shadow of the saw's teeth on his face, like a row of terrifying sharp teeth, sneering at the computer in front of him.

"You... what are you doing? I'll have you know, I'm not to be trifled with!" The computer screams in agony, spewing ghostly energy all over, black wires writhing wildly around.

Whoosh! 

Alexander's palm flips, a ghostly green light flashes from his palm, and then, four or five unidentified wires are severed in unison, eliciting screams from the computer.

"I'm easily frightened, so you'd better not move around. Let me help you wipe off the dust, or I might accidentally cut something else, and that wouldn't be good!"