Which one of the following attributes makes the price-to-sales ratio an attractive valuation metric?

Group of answer choices

a. The price-to-sales ratio will almost always be positive.

b. It is impossible for managers to manipulate the price-to-sales ratio.

c. The price-to-sales ratio is not affected differences in firm's growth rates.

d. The price-to-sales ratio is an intrinsic valuation metric versus a relative valuation metric.