In the array of numbers to the right, each number above 27 x 81 ... ...

In the array of numbers shown, each number above the bottom row is equal to three times the number immediately below it. What is the value of x + y?
27 x 81 -108
9 -18 27 -36
3 -6 y -12
1 -2 3 -4

(A)   –45
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Nova Press: Set T - Sequences & Series