Total Power $($TP$)$ in a Three Phase Circuit is given by$?$

a$.$ None of The Above

b$.3\frac{V}{P}hI$ PhCos$$

c$.$ Both $1$ & $2.$

d$.\sqrt[\phantom{2}]{3}$VLILCos$$

Whish of the following configuration has three similar ends of windings connected at a common point?

a$.$ star connection

b$.$ mesh connection

c$.$ parallel connection

d$.$ delta connection