Use the givens provided below to answer this question. At which lot size is the annual holding costs equal to annual ordering cost. Choose the closest answer.

Annual demand $=1750$

Present lot size $=350$

Unit cost $=$$$200$

Holding cost $=$$$50$ per unit

Ordering cost $=$$$400$

$167$

$350$

$221$

$251$

$234$

$201$

$100$