Which of the Following Would the Supreme Court Likely Refuse

Which of the following would the Supreme Court likely refuse to hear because the case lacked "ripeness"?

A) a case involving a citizen suing the Social Security Administration for failure to deliver Social Security benefits prior to the time the citizen was scheduled to receive the benefits
B) a case involving a student who was first rejected but then, later, admitted to a state-run university suing that university for discrimination in the admissions process
C) a case involving a convicted murderer challenging the constitutionality of the death penalty while on death row
D) a case involving a dispute between the president and the Congress over access to "top secret" documents