Turning steering wheel while not moving


#1

I’m learning how to drive at the moment. While parking, my instructor

tells me to turn my steering wheel completely to the right and then

use the gas pedal to back the car. My sister (which I’m practicing

with) tells me to NEVER do that because it will break the transmission

or something. Who is right? Is it bad for a car to turn the steering

wheel if you’re not moving?