mViewModel!!.tea.observe(this, Observer { tea: Tea?

In our TeaViewModel class, that extends ViewModel, we have such prorerty:

val tea: LiveData<Tea>

An observer in our Activity (type of mViewModel variable in example is TeaViewModel) is set in this way:

mViewModel!!.tea.observe(this, Observer { tea: Tea? -> displayTea(tea) })

What will be a correct displayTea method definition?
A . private fun displayTea()
B . private fun displayTea(tea: Tea?)
C . private fun displayTea(tea: LiveData?<Tea>)
D . private fun displayTea(tea: LiveData?<T>)

View Answer

Answer: B