1) The domain of discourse for x and y is the set of employees at a company, Miguel is one of the employees at the company. N(x, y): x earns more than y. Select the logical expression that is equivalent to: "Exactly one person earns more than Miguel." a. 3x Vy (Nx, Miguel)A-Ny, Miguel)) b. ax Vy (N(x, Miguel) (cy#x)---N(y, Miguel) c. 3x N(x, Miguel) d. ax Vy (N(x, Miguel)--((**)--N(y, Miguel)))