Dedicated to the computer sales business, an entrepreneur has bought a certain number of laptops of three types: M, N, and P, which cost S/ 840, S/ 1260, and S/ 1386, respectively. Additionally, the following information is known:

I. The total number of laptops of the three types purchased is 32.
II. The total purchase of laptops of the three types is S/ 40320.


A) 12
B) 13
C) 11
D) 10