1. Some programming languages are typeless. What are the obvious advantages and disadvantages of having no types in a language? [20 pts] [OC-1-h] 2. Consider the following JavaScript skeletal program: // The main progranm var x; function sub101 var x; function sub20 function sub30 { Assume that the execution of this program is in the following unit order: main calls sub1 sub1 calls sub2 sub2 calls sub3 Assuming static scoping, in the following, which declaration of x is the correct one for a reference to x? [30 pts] i. subl ii. sub2 iii. sub3