So you're thinking between choosing a single field form (so multiple steps) or a single step form. I'd go with option 1, single step form.
The general idea behind multiple-step forms is that the further the
prospect goes down the sales funnel, the less likely they are to turn
around when asked for valuable information. Essentially, they’re more
likely to finish the whole form because they’re already committed.
Basically, people like filling out longer forms when they’re already
invested in the process, like during checkout while shopping online.
This works because you're clustering fields into chunks that relate to one another.
They do not work well if you don’t have the form’s progress clearly
listed somewhere. It’s important to make sure that you provide the
user with constant feedback on their progress to let them know how
much more time they will require to finish the form.
If you put this in a card format, you do not communicate properly what they can expect next. It requires more effort both mentally and physically to fill in a form that requires this much interaction.
You don't really ask for enough information to warrant a multi-step form. The whole charm of having multiple steps is that you ease users into letting go of more sensitive information in each step, while keeping them engaged through having committed so much already. With only three fields, I'd pick a single form.
More about multi-step forms: http://blog.formkeep.com/should-you-use-single-step-or-multi-step-forms/