7. For each state of an n-channel enhancement-mode MOSFET that follows,

determine what operating region the MOSFET is in if the threshold voltage Vt is 3

V. Please indicate ON or OFF

a. Vgs = 2 V, Vds = 5 V

b. Vgs = 4 V, Vds = 5 V

c. Vgs = 6 V, Vds=5 V

d. Vgs = -2.5 V