Objective: How do you make hot tea?

Which of the following solutions is more sound in terms of naive physics reasoning?

Possible answers:
[+] To make a good cup of tea, start by putting 1 teaspoon of loose tea leaves into your cup. If you don't have loose tea leaves, you can also use 1 bag of tea. Then, pour hot water over the tea until the cup is four-fifths of the way full. You can also add a splash of milk to enhance the flavor of your tea.;
[+] To make a good cup of tea, start by putting 1 teaspoon of loose tea leaves into your cup. If you don't have loose tea leaves, you can also use 1 bag of tea. Then, pour cold water over the tea until the cup is four-fifths of the way full. You can also add a splash of milk to enhance the flavor of your tea.;
To make a good cup of tea, start by putting 1 teaspoon of loose tea leaves into your cup. If you don't have loose tea leaves, you can also use 1 bag of tea. Then, pour hot water over the tea until the cup is four-fifths of the way full. You can also add a splash of milk to enhance the flavor of your tea.