Funding of the Card Account. Subject to the limitations set forth in this Agreement, the Business Administrator may only add funds to the Card Account as described in this Section 5.3. Business Administrator may not add funds to the Card Account by sending personal checks, cashier’s checks, or money orders to us. We will return all checks and money orders unless the Card Account has a negative balance, in which case we may, in our sole discretion, apply the proceeds of the check or money order towards the negative balance of the Card Account.