Consider the following two reactions:  
$C{d}^{2+}(aq.)+4C{H}_{3}N{H}_2\stackrel{K_1}{\to }\text{'}A\text{'},\Delta G_1^0$ 
 $C{d}^{2+}(aq.)+2H_{2}NC{H}_{2}C{H}_{2}N{H}_2\stackrel{K_2}{\to }\text{'}B\text{'},\Delta G_2^0$
According to given information the correct statement(s) is/are: 

Formation constant $K_2$ is greater than formation constant $K_1$

$\Delta G_1^0$ is more negative than $\Delta G_2^0$  

Formation constant $K_1$ is greater than formation constant $K_2$ 

$\Delta G_2^0$ is more negative than $\Delta G_1^0$