Answer to Question #38613 in Math for Sujata Roy

Question

Consider the language defined as follows
L=(0+1)* if man goes to Mars by 2020AD
And
L=0* if man never goes to the Mars
Which of the following is true?
a. L is context free language but not recursive
b. L is recursive
c. Whether L is recursive or not will be known in 2020AD
d. L is a r.e. set that is not regular