Suppose That a Company Can Produce P(x, Y) = 50 $\sqrt { \frac { \left( x ^ { 3 } + y ^ { 3 } \right) } { 10 } }$

Multiple Choice

Suppose that a company can produce P(x, y) = 50 $\sqrt { \frac { \left( x ^ { 3 } + y ^ { 3 } \right) } { 10 } }$ items using x units of labor and y units of capital. What is the productivity of capital when x = 10 and $y = 20$ ?

A) 3000
B) 100
C) 500
D) 2500
E) none of these