Location of theme options page menu icon

Question

Hi this may look a little silly question but can someone let me know where is the location for theme_path? is it inside my own theme or very top level of the directory?

'menu_icon'  => theme_path . '/images/product-icon.png', 

A: www.awebsite.com/images/product-icon.png
B: www.awebsite.com/wp-content/themes/mytheme/images/product-icon.png