The Cowgers leased certain real property to Northwestern Bell for ten years. The contract granted an option to buy the property provided that the lessee gives sixty days’ prior notice of its intention to purchase. Northwestern Bell gave the required sixty days’ notice, but the Cowgers refuse to sell because the buyer did not tender the purchase price at the time it gave notice. Northwestern Bell sued for specific performance. The Cowgers claimed that the option had not been properly exercised. Can Northwestern Bell accept the option without tendering the purchase price? Explain.