Multi-choice problem: Choose from the options at the end, and answer how do you do this: How can you get a child to smile in a photo?

pick from the following.
(a). Ask the kid to tell you to tell you a sad story, and then tell them they CAN NOT laugh (it will crack them up and they can't help but smile)..
(b). Ask the kid to tell you to tell you a joke, and then tell them they CAN NOT laugh (it will crack them up and they can't help but smile)..
(b).