What Is the Lowest Possible Value of a European Put

Multiple Choice

What is the lowest possible value of a European put?

A) Max(0,X - S₀)
B) X(1 + r) ^-T
C) Max[0,S₀ - X(1 + r) ^-T]
D) Max[0,X(1 + r) ^-T - S₀) ]
E) none of the above