4. Derrick Smith purchased his house for $ 60,000 in 2010. He is advised by a doctor to install a swimming pool in his residence so that his mother, who is afflicted with heart disease, will be required to swim every day. If the cost of installing the swimming pool is $2,000 and the increase in the value of the residence is only $1,000. What amount will be deductible as a medical expense of Derrick? (3 Pts) A) $2,000 B) $61,000 C) $59,000 D) $1,000