The correct option is D All of these
Deuteromycetes, also known as fungi imperfecti is a type of fungi in which the perfect (sexual) stage is either absent or not reported. Only their asexual form of reproduction is known, meaning that these fungi produce their spores asexually, by the process called sporogenesis. Alternaria, Colletotrichum and Trichoderma belong to deuteromycetes.