Intro Filled Entries

This intro problem practices COUNTA. COUNTA tells you how many cells in a range are not blank, whether they contain numbers or text. Update the output cells so each row shows how many entry cells in columns C through F are filled. See Examples

Your solution should use cell references so it updates automatically if the input cells change values.

COUNTA
A1
fx

This cell cannot be edited

A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
1
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