JavaScript: const d = 4 let a = 1 if (true) { let a = 4 var b = 2 if (a

JavaScript:

const d = 4
let a = 1
if (true) {
let a = 4
var b = 2
if (a < 5)="">
var c = 1
b = 5
}
}
console.log(a + b + c)

What is is the output and why?

a) The output is 7 because a, b, c and d are globally scoped variables

b) The output is 11 because a, b, and c are all globally scoped variables while d is a block scoped variable

c) The output is 7 because b and c are globally scoped variables

d) The output is 6 because a is a block scoped variable and b is a globally scoped variable