question_answer

The value of \[\left( \frac{\mathbf{1}}{\mathbf{lo}{{\mathbf{g}}_{\mathbf{3}}}\mathbf{60}}\mathbf{+}\frac{\mathbf{1}}{\mathbf{lo}{{\mathbf{g}}_{\mathbf{4}}}\mathbf{60}}\mathbf{+}\frac{\mathbf{1}}{\mathbf{lo}{{\mathbf{g}}_{\mathbf{5}}}\mathbf{60}} \right)\]is:

A)  0                                

B)  1 

C)  5                                

D)  60