If an investment is going to qualify as a cash equivalent, it must be readily convertible to a known amount of cash. Which additional statement is correct?

a.

It must be sufficiently close to its maturity date so that the market value is relatively insensitive to interest rate changes.

b.

It must be identified as a cash equivalent on the statement of earnings.

c.

The investment must have a known foreign exchange rate.

d.

It must mature within 4 months.