49. Consider a soap bubble and a liquid drop of the same radius. If both have the same surface tension γ, radius R, and external pressure P0, what is the relationship between the internal pressure of the soap bubble (Pbubble) and the internal pressure of the liquid drop (Pdrop)? (A) Pbubble ＞ Pdrop (B) Pbubble ＜ Pdrop (C) Pbubble = Pdrop (D) Cannot be compared