For a transistor action, which of the following statements are correct ?

Question

$\begin{array}{1 1}\text{Collector current is equal to the sum of base current and emitter current } \\ \text{the input resistance depends upon the current Ic in the transnsistor} \\ \text{the emitter junction is forward biased and collector current is reverse biased}\\ \text{Both the emitter junction as well as the collector junction are forward biased } \end{array}$