Consider the following points:

$\left(\mathrm{a}\right)$ $\mathrm{Cs}$ is the strongest reducing agent in $\mathrm{IA}$ the group element.

$\left(\mathrm{b}\right)$ $\mathrm{Be}$ does not form peroxide in $\mathrm{IIA}$ group elements.

$\left(\mathrm{c}\right)$ The density of potassium is less than sodium.

$\left(\mathrm{d}\right)$ In alkali metals $\mathrm{Li},\mathrm{Na},\mathrm{K}$ and $\mathrm{Rb}$, lithium has the minimum value of $\mathrm{M}.\mathrm{P}.$

Point out that the statement.

Identify the correct statements about alkali metals.

A. The order of standard reduction potential $({\mathrm{M}}^{+} | \mathrm{M})$ for alkali metal ions is $\mathrm{Na} > \mathrm{Rb} > \mathrm{Li}$.

B. $\mathrm{CsI}$ is highly soluble in water.

C. Lithium carbonate is highly stable to heat.

D. Potassium dissolved in concentrated liquid ammonia is blue and paramagnetic.

E. All alkali metal hydrides are ionic solids.

Choose the correct answer from the options given below