The surfaces intersect in a space curve C. Determine the projection of C onto the xy-plane. 6x2 + 7y + (2- 2)2 =2 6x2 +71= z2 a) 06x + 7y = 1 b) 06x2 + 7y = 42 c) 07x2 + 7y = 1 d) 06x2 + 8 y = 1 e) 06 x2 + 7y = 2 f) O None of the above