Which one of the following statements is correct? a. Preference shares should be included in the calculation of book value of equity for PB ratio b. For young technology firms, book value multiples are good measures as book values are stable c. Multiples are ratios of what you are paying for an asset over what you are getting in return from the asset d. If the numerator of a multiple is a measure of equity, the denominator can be a measure of the asset of the firm