Consider the operators \\( \\frac{d}{d x} \\) and \\( \\frac{d^{2}}{d x^{2}} \\). Is \\( \\Psi(x)=A e^{i k x}+B e^{-i k x} \\) an eigenfunction of these operators? If so, what are the eigenvalues? Choose the correct option:

a) Yes, the eigenvalues are
A and
B
b) Yes, the eigenvalues are A, B, and k
c) No, the eigenvalues are not A, B, or k
d) No, the eigenvalues cannot be determined
Note: The unnecessary space and words have been removed to make the question concise and clear.