An application in Form C is required to be submitted in case a person intends to withdraw funds from the Capital Gains Account for the 1st time.
The funds withdrawn should be put to use within 60 days of withdrawl and the amount unutilised should be deposited back in the Capital Gains Account.
Form C is required to be submitted for 1st time withdrawl of funds. For subsequent withdrawls, Form D is required to be submitted.
All about Capital Gains Account - http://www.charteredclub.com/capital-gains-account-scheme/