Explanation:

...Fourth is incorrect. Mutual Funds are not part of small saving scheme.
The Small Savings Schemes can be grouped under three:
(i) Post office Deposits: Post Office Savings Account, Post Office Time Deposits (1,2,3 and 5 years), Post Office Recurring Deposits, Post Office Monthly Account,
(ii) Savings Certificates: National Savings Certificate (VIII Issue) and Kisan Vikas Patra (iii) Social Security Schemes: Public Provident Fund, Senior Citizens Savings Scheme, and Sukanya Samriddhi Account.