You are working on a new feature to allow multiple vendors for various products. To display vendors you add a custom fieldset component and select with the name myCompanyVendors. It will be shown if the number of vendors is more than one.
To do this you implement a custom method on your component:

How do you cause the method to be called when the value of options change?
A)

B)

C)

D)

Suppose you are tasked with update a product price to 10% more and it's cart rule to provide 5% discount after 2 month. So after this timeperiod, product price and cart rule must be activated workign in the frontend for users. Which Magento feature you should use to do the above task?

Suppose you need to add an admin grid using uiComponent. if page URL ends with banners/index/index, then which basic uiComponent you would use and what should be the page layout file:

You need to include the customer account menu on a custom storefront page, but only when the method MyCompany\\lyModule\ViewModel\MyView: :hasCustomerMenu() returns true. How do you accomplish this?

You want to display customized product list along with it's tier prices. To render this price which class should be used and which data needs to be provided ?