The retired crafts designer Carol Potts sounds to be ______.

A．senior investors
B．people in a specific province
C．relatively young people
D．groups made up of 20 or 30 traders

A．on-line trading attracts more and more retirees to get involved
B．on-line trading is more suitable for the old than for the young now
C．on-line trading enables the retirees to get rid of their advisers
D．on-line trading offers incredible tools and high profits to investors