Consider the graph with four lines below.

On a coordinate plane, line a has a positive slope and goes through points (negative 1, 0) and (1, 2), line b has a negative slope and goes through (negative 2, 2) and (negative 1, negative 1), line c has a negative slope and goes through (0, 3) and (1, 0), and line d is horizontal at y = 1.

By inspection, which system would have no solution?
line a and line b
line a and line c
line b and line c
line b and line d