Given this package.json file, which of the following will run a test suite found in '/test/main_test.js'?

{
 "name": "workspace",
 "version": "1.0.0",
 "description": "",
 "main": "index.js",
 "dependencies": {
  "chai": "^3.5.0"
 },
 "devDependencies": {
  "mocha": "^2.4.5"
 },
 "scripts": {
  "test": "mocha"
 }
}