Jen values her time at $60 an hour. She spends 2 hours giving Colleen a massage. Colleen was willing to pay as much at $300 for the massage, but they negotiate a price of $200. In this transaction,

a. consumer surplus is $20 larger than producer surplus.

b. consumer surplus is $40 larger than producer surplus.

c. producer surplus is $20 larger than consumer surplus.

d. producer surplus is $40 larger than consumer surplus.