∆abc is reflected about the line y = -x to give ∆a'b'c' with vertices a'(-1, 1), b'(-2, -1), c(-1, 0). what are the vertices of ∆abc? a(1, -1), b(-1, -2), c(0, -1)
a(-1, 1), b(1, 2), c(0, 1)
a(-1, -1), b(-2, -1), c(-1, 0)
a(1, 1), b(2, -1), c(1, 0)
a(1, 2), b(-1, 1), c(0, 1)