JavaScript Why is my instance property undefined when used in a class method?

When trying to run cow1.voice(); and I keep getting an error in the console.

Uncaught ReferenceError: type is not defined

class Cow {
  constructor(name, type, color) {
    this.name = name;
    this.type = type;
    this.color = color;
  };
  voice() {
    console.log(`Moooo ${name} Moooo ${type} Moooooo ${color}`);
  };
};

const cow1 = new Cow('ben', 'chicken', 'red');
Answer:1

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