Choose the correct statements from the following :
A. Cajanus Cajan L. is not a correct botancial name of pigeonpea.
B. Powdery mildew is a common disease in blackgram.
C. Arachir hypogoea L. is botancial name of peanut.
D. Tikka disease is very common in peanut.
Choose the correct answer from the options given below :