Select all the statements regarding capital structure theory and capital structure that are TRUE?

$(1)$ At any given point in time the optimal capital structure and the actual capital structure may differ.

$(2)$ Capital structure refers to how an organisation finance its current assets, expressed in percentages, the proportion of debt versus equity.

$(3)$ Capital is raised within the capital markets and consists of long$-$term financing in the form of equity and debt.

$(4)$ Because of the varying risks and expectations of investors the sources carry different cost$($s$)$ to organisations.

$($a$)$ Statements $(1),(2)$ and $(3)$

$($b$)$ Statements $(1),(2),(3)$ and $(4)$

$($c$)$ Statements $(1),(3)$ and $(4)$

$($d$)$ Statements $(1),(2)$ and $(4)$

Select one:

a$.$

Statements $(1),(3)$ and $(4)$

b$.$

Statements $(1),(2)$ and $(4)$

c$.$

Statements $(1),(2)$ and $(3)$

d$.$

Statements $(1),(2),(3)$ and $(4)$