In an onto function what condition holds for elements of codomain?

A. हर codomain element की preimage हो / Every codomain element has a preimage

Step 1: Identify the concept: this is onto function. Step 2: In onto function every element of codomain is image of some element of domain. Step 3: Remember onto means full codomain covered.

Step 1: concept पहचानें: यह onto function है। Step 2: Onto में codomain का हर element किसी domain element की image होता है। Step 3: Onto means full codomain covered याद रखें।