Consider the following JavaScript program

var x function subl ) var x function sub2 () 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 a. Assuming static scoping, in the following, which dec laration of x is the correct one for a reference to x? 1. subi ii. sub2 iii. sub3 b. Repeat part a, but assume dynamic scoping