Ok, this is my second attempt! The answer is option 3!
Consider giving each letter and shape a value like this: A=4, B=3, C=2, D=1, Rectangle=Circle=2 and Triangle=Line=anything!
Then if we add the values in each row, we get these numbers: First row=18+Line+Triangle=18+2Line/Triangle. Second row=18+2Lines=18+2Line/Triangle. Fourth row=18+2Lines=18+2*Line/Triangle.
Therefore, considering the third row has the same value, it should also be like 18+2Line/Triangle. So far, it is 14+1Triangle, so the only option that can make it 18+2*Line/Triangle, is option 3.