Which of the following are prohibited transactions?
a. Melvin is a co-trustee of Super K Profit Sharing Plan. He borrowed some securities from the profit sharing plan for 4 days as collateral on a complicated brokerage transaction. He notified the other co-trustee of his intended action before borrowing the securities and had returned the securities on the fourth day, by 10:00 a.m.
b. Bob, a covered participant of the profit sharing plan, borrows $5,000 from his account balance to pay for his first semester in graduate school.
c. Lacy is age 20 and has worked for the company for 8 months. The company's profit sharing plan has the Standard Eligibility standards. She has picked out some mutual funds in the plan's menu of investments which she wants to allocate her account balance in the future.
d. All of these transactions.
e. None of these transactions.