Am I insane...or is this quiz question trolling me?

Question: "How do you add or remove radial dividers when using the Polar Grid tool?"

Easy. You hold down the mouse button as you drag out your shape, and then also hit the left or right arrow keys to add or subtract the amount of radial dividers you want in your shape. Alternately, you press up or down to add or subtract the number of concentric circles that you want in your polar grid shape.

Click "Left and right keys." - - > BIG FAT RED "SORRY, BRUH...WRONG"

...

I get it. I'm a Grammar Nazi who is over-sensitive and easily frustrated, especially with the quality of the video caption transcripts. But come on...a big crimson fail flag for being right...on a quiz, when it matters?

Just to make sure I'm not the crazy one (apart from the nervous agitation that errors like this engender in me, causing me to lose large portions of my day as I hunt out 'things that are wroooooooong on the internet.').

Pardon me while I seek out a brown paper sack and finish this exasperation session with some bona fide hyperventilating.