Which among the following are incorrect about the reproduction in slime moulds?

• A. During favourable conditions, slime moulds form an aggregation called plasmodium which may grow and spread over several feet
• B. Under favourable conditions, slime moulds form fruiting bodies bearing spores at their tips which then get dispersed through air currents
• C. The spores possess true walls that is resistant to adverse conditions
• D. Slime moulds reproduce either by sexual or by asexual reproduction