Texas law provides that 18 years old is the age of majority for purposes of contracting. Mary, a 16-year-old Texan, signs a contract to buy a bike from Tom, the owner of Tom's Bike Store in Dallas, Texas. Which of the following statements is true:
I. Mary may either disaffirm or ratify the contract when she is 17.
II. Tom may disaffirm the contract before Mary reaches the age of 18.
III. Mary may disaffirm the contract when she is 19.
a) Only statement I is true
b) Only statement II is true
c) Only statement III is true
d) Statements I and II are true
e) Statements I and III are true