6. Consider the followng Java Seript seeal rogram: 6. Consider the following JavaScript skeletal program: // The main program var x; function subl ) ( var xi function sub20 function sub3 ) Assume that the execution of this program is in the following unit order: main calls subl subl calls sub2 sub2 calls sub3 Problem Set 237 Assuming static scoping, in the following, which dec- a. laration of x is the correct one for a reference to x? i. subl ii. sub2 ii. sub3 b. Repeat part a, but assume dynamic scoping