求解释

问题如下：

What are the components of the P&L decomposition?

解释：

The components of the P&L decomposition are (a) the carry roll-down, (b) the impact of rates being different from those assumed in the carry roll-down, and (c) the impact of spread changes. Financing costs and the changes in accrued interest could be additional components.

题目问：P&L的分解都有哪些部分？

(a) 利差下调，

(b) 利率的影响不同于利差下调中假设的利率，

以及 (c) 点差变化的影响。融资成本和应计利息的变化可能是额外的组成部分。