Match List-I with List-II in regard to Fourier series of periodic f(t) and select the correct answer using the options given below:

List-I (Properties)	List-II (Characteristics of the trigonometric form)
a. f(t) + f(-t) = 0	1. Even harmonics can exist
b. f(t) - f(-t) = 0	2. Odd harmonics can exist
c. $${\text{f}}\left( {\text{t}} \right) + {\text{f}}\left( {{\text{t}} - \frac{{\text{T}}}{2}} \right) = 0$$	3. The dc and cosine terms can exist
d. $${\text{f}}\left( {\text{t}} \right) - {\text{f}}\left( {{\text{t}} - \frac{{\text{T}}}{2}} \right) = 0$$	4. sine terms can exist
	5. cosine terms of even harmonics can exist