HELP ASAP
 (b) The grocery store was selling variety bags of apples. Each bag contained x Braeburn apples, y Granny Smith apples, and z Honeycrisp apples. Zahra bought 2 bags of apples. For each expression, identify whether it can be used to determine the total number of apples Zahra bought. Explain your answer.
 (a) 2 + x + y + z
 (b) 2x + 2y + 2z
 (c) 
 (d) x + x + y + y + z + z
 (e) 
 (f)