What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_11, x_11 is excited if and only if x_11 will write a letter. It is late. Jessica is not writing a letter.
It is late and Jessica is not writing a letter. Jessica is not writing a letter and it is late. For all x_11, if x_11 were excited, then x_11 is writing a letter. For all x_11, if x_11 writes a letter, then x_11 is excited.