An unlisted company operates in a niche market, exploring the west coast of Africa for new oiI reservoirs.

The oil exploration program has been successful in recent years and t now has a substantial amount of oil reserves with a high level of certainty of being recoverable Under financial reporting regulations, oil still in the ground is not recognised as an asset unit is extracted.

The expense of the exploration program has used up all the company’s available cash resources.

The company has denied to list or a stock market and raise finds through an initial public offering to finance its drilling program.

Which of the following valuation methods in the appropriate to use in calculating an initial listing price for this company?