Difference 1: handling fee
Sales service fee: Fund A does not charge investors' sales service fee, while Fund C charges investors' sales service fee.
Subscription fee: Fund A will charge subscription fee, while Fund C will not charge subscription fee.
Subscription fee: Class A funds charge subscription fee, while Class C funds do not charge subscription fee.
Redemption fee: Class A funds held for less than two years have redemption fee, Class C funds held for less than 30 days have no redemption fee, Class C funds held for more than 30 days have no redemption fee, and some of them are even exempted from redemption fee for more than 7 days.
Difference 2: Fund A is suitable for long-term investment, while Fund C is suitable for short-term investment.
If you want to hold it for more than three years, you'd better choose Fund A, because the longer you hold it, the lower the cost. If you persist long enough, you will be free in the end.
If it is a short-term investment, such as within one year, then you can choose fund C, because there is no redemption fee for holding fund C for more than 30 days. It should be noted that although Fund C does not charge a one-time subscription fee, it charges a daily sales service fee.