In a coding system, 'APPLE' is coded as '13524' and 'LEMON' is coded as '25436'. What is the code for 'MELON'?

Answer: B. 25436
The letters M, E, L, O, and N correspond to the numbers 2, 5, 4, 3, and 6 respectively based on the coding of 'LEMON'. Therefore, 'MELON' is coded as '25436'.