Discussion on Problem 348 | Equilibrium of Non-Concurrent Force System

In this problem …the fixed support at point A has been shown to have only Ax i,e horizontal component while the fixed support at point B has both horizontal and vertical components, Bx and By. Is there any specific reason for the support at point A to not have the vertical component? I don’t know what I am missing here.Any help would be greatly appreciated.=]].

problem:348

By hole do you mean the bar cd or the fixed support at A ? What I assumed is that if there is any vertical component for point A that is Ay,it would get nullified by the vertical component of B.But I'm not sure if that's correct.
And I dint quite get what you said.Can you explain a bit? Sorry.=S
I just thought by the rule of thumb there's supposed to be two components for point A,as it's a fixed support as per graphics..but that rule has not been applied here.Hence ..my question.