In the elliptic curve group defined by y2= x3- 17x + 16 over real numbers, what is P + Q if P = (0,-4) and Q = (1, 0)?

In the elliptic curve group defined by y2= x3- 17x + 16 over real numb

1.	In the elliptic curve group defined by y2= x3- 17x + 16 over real numbers, what is P + Q if P = (0,-4) and Q = (1, 0)?
A.	(15, -56)
B.	(-23, -43)
C.	(69, 26)
D.	(12, -86)
Answer» B. (-23, -43)