单选题

consta=10functionrunFunction(){consta...

Question

const a = 10

function runFunction() {

const a = 20

console.log('inside', a)

}

runFunction()

console.log('outside', a)

A.

inside 20

outside 20

B.

inside 20

outside 10

C.

inside 10

outside 20

D. 程序报错