Which one give you the best return?

My dear friends just having some discussion whose have a better return among their property in KL.
This is just for fun and practicing my brain in this late hour after long hectic day.

Question 1:
Among the 3 person below, whose has the highest rental yield?

Question 2:
Among the 2 person below, whose has the best yield?

You may do some research on how to do the calculations......
Otherwise scroll down for answer.......

Answer 1:
B achieve the best rental yield.
If A can increased the rental, can achieve the highers yield.
C is just merely slightly better than the Bank FD rate

Answer 2:
Very clearly that E is doing excellent in this case.