Tom, a customer care executive, receives an order of 25 personal computers from a customer who wants the goods to be delivered to him in two days. Tom needs to inform the customer of that there will be a delay in shipping goods in bulk in such a short span of time. In order to maintain trust, Tom should: _________

a. update the customer only when they enquire on the delay in the shipment.
b. update the customer regarding the delay as per his own convenience.
c. update the customer regularly and keep the customer informed of any further delay
d. update the customer only when he or she raises a complaint regarding non-receipt of goods.