Out of the four memorials listed, three are alike in some manner and one is different. Select the odd one.

Shantivan → Memorial of Jawaharlal Nehru.

Kisan Ghat → Memorial of Chaudhary Charan Singh (former PM and farmer leader).

Smriti Sthal → Common memorial for multiple Prime Ministers (no single individual).

​​Raj Ghat→ Memorial of Mahatma Gandhi.​

Raj Ghat, Shantivan, Kisan Ghat → Dedicated to one specific leader each.

Smriti Sthal → Dedicated to multiple leaders together, not a single person.

Thus, correct option is (C).