$4$

$.$

$$Which is the best example of Metcalf

$$

s Law?

a

$.$

$$More value from multiple phone users than a single phone user

b

$.$

$$Computer chip capacity increasing as size is decreasing.

c

$.$

$$Cost of equivalent computing power is halving on a similar time scale.

d

$.$

$$Data that triples every

$1$

$2$

$$months