Consider the following parallel, first order processes
$\begin{array}{l}A\underset{E_1}{\overset{k_i}{\to }}P\\ A\underset{E_2}{\overset{k_2}{\to }}Q\end{array}\}{k}_1,k_2$  are rate constants and  ${\text{E}}_{\text{1}}{\text{\hspace{0.17em}and\hspace{0.17em}E}}_{\text{2}}$ are activation energies. 
The correct deduction(s) is (are)
 

If a catalyst is added, it will decrease both  ${\text{E}}_{\text{1}}{\text{\hspace{0.17em}and\hspace{0.17em}E}}_{\text{2}}$ but by same amount.

At any time, the ratio of concentration of P and Q has a fixed value at a given temperature.

If ‘E’ represents the overall activation energy for decay of A, it will be  $\left(\frac{E_1{k}_1+E_2{k}_2}{k_1+k_2}\right)$

If ‘k’ represents the overall rate constant for decay of A, it will be  $k_1+k_2$