If `P=[(secalpha,tanalpha),(-cotalpha,cosalpha)] and Q=[(-cosalpha,tanalpha),(-cotalpha,-secalpha)]` , than `2P^-1+Q=`
A. `[{:("cos"alpha, -"tan"alpha), ("cot"alpha, "sec"alpha):}]`
B. `[{:(0, 0), (0, 0):}]`
C. `[{:(-"cos"alpha, "tan"alpha), (-"cot"alpha, -"sec"alpha):}]`
D. `[{:(1, 0), (0, 1):}]`
