For a Reversible Isothermal Process Involving Ideal Gases
A) W $\frac{\mathrm{V}_{1}}{\mathrm{~V}_{2}}$

For a reversible isothermal process involving ideal gases

A) w = nRT ln $\frac{\mathrm{V}_{1}}{\mathrm{~V}_{2}}$
B) w = $-\int_{V_{1}}^{V_{2}} P d V$
C) w = -nRT $\int_{v_{1}}^{v_{2}} \frac{1}{V}$ DV
D) b and c
E) all of the above