Suppose Alice wants to buy the asset of the Telecom shares.
One possibility way to get the requisite $35 is to invest $23 of her own money and to sell three call options to Bob at the valuation of $4 each.
After one year, if the asset price goes down, then the options are worthless and Alice's asset, and hence her hypothetical portfolio, is worth $28; whereas if the asset price goes up, she has to buy two more lots of Telecom shares, costing $22, in order to satisfy Bob's demand for the three lots of shares, for which Alice receives $444, and hence at the end of the year Alice will have $55.
The hypothetical portfolio's value of $28, irrespective of whether the asset price rises or falls, is better than what Alice could have gained if she had invested her $23 in bonds at, say, 12% interest, because at the end of the year that would have only been worth $25.76.
Alice makes a risk-free profit!
This risk-free profit shows that, at $4, the call options are overpriced.
The opportunity for risk-free profit would result in traders clammering to sell options, which would flood the market and hence reduce the price of the option.
We soon find that the market forces the call option to have a definite price.
But before we do that, note that Alice's choice of selling three call options is the result of a careful balancing act.