Daniel is ____his purse, but he can't____ it. [ ]

A. looking for; find

B. seeing; look for

C. finding; look at

D. looking at; see

设函数f（x）=log_ax（a＞0且a≠1），若f（x₁x₂…x₂₀₁₀）=8，则f（x₁²）+f（x₂²）+…+f（x₂₀₁₀²）=（　　）

A．4

B．8

C．16

D．2log_a⁸