the pnc financial services group , inc .
2013 form 10-k 65 liquidity and capital management liquidity risk has two fundamental components .
the first is potential loss assuming we were unable to meet our funding requirements at a reasonable cost .
the second is the potential inability to operate our businesses because adequate contingent liquidity is not available .
we manage liquidity risk at the consolidated company level ( bank , parent company and nonbank subsidiaries combined ) to help ensure that we can obtain cost-effective funding to meet current and future obligations under both normal 201cbusiness as usual 201d and stressful circumstances , and to help ensure that we maintain an appropriate level of contingent liquidity .
management monitors liquidity through a series of early warning indicators that may indicate a potential market , or pnc-specific , liquidity stress event .
in addition , management performs a set of liquidity stress tests over multiple time horizons with varying levels of severity and maintains a contingency funding plan to address a potential liquidity stress event .
in the most severe liquidity stress simulation , we assume that our liquidity position is under pressure , while the market in general is under systemic pressure .
the simulation considers , among other things , the impact of restricted access to both secured and unsecured external sources of funding , accelerated run-off of customer deposits , valuation pressure on assets and heavy demand to fund committed obligations .
parent company liquidity guidelines are designed to help ensure that sufficient liquidity is available to meet our parent company obligations over the succeeding 24-month period .
liquidity-related risk limits are established within our enterprise liquidity management policy and supporting policies .
management committees , including the asset and liability committee , and the board of directors and its risk committee regularly review compliance with key established limits .
in addition to these liquidity monitoring measures and tools described above , we also monitor our liquidity by reference to the liquidity coverage ratio ( lcr ) which is further described in the supervision and regulation section in item 1 of this report .
pnc and pnc bank calculate the lcr on a daily basis and as of december 31 , 2018 , the lcr for pnc and pnc bank exceeded the fully phased-in requirement of 100% ( 100 % ) .
we provide additional information regarding regulatory liquidity requirements and their potential impact on us in the supervision and regulation section of item 1 business and item 1a risk factors of this report .
sources of liquidity our largest source of liquidity on a consolidated basis is the customer deposit base generated by our banking businesses .
these deposits provide relatively stable and low-cost funding .
total deposits increased to $ 267.8 billion at december 31 , 2018 from $ 265.1 billion at december 31 , 2017 driven by growth in interest-bearing deposits partially offset by a decrease in noninterest-bearing deposits .
see the funding sources section of the consolidated balance sheet review in this report for additional information related to our deposits .
additionally , certain assets determined by us to be liquid as well as unused borrowing capacity from a number of sources are also available to manage our liquidity position .
at december 31 , 2018 , our liquid assets consisted of short-term investments ( federal funds sold , resale agreements , trading securities and interest-earning deposits with banks ) totaling $ 22.1 billion and securities available for sale totaling $ 63.4 billion .
the level of liquid assets fluctuates over time based on many factors , including market conditions , loan and deposit growth and balance sheet management activities .
our liquid assets included $ 2.7 billion of securities available for sale and trading securities pledged as collateral to secure public and trust deposits , repurchase agreements and for other purposes .
in addition , $ 4.9 billion of securities held to maturity were also pledged as collateral for these purposes .
we also obtain liquidity through various forms of funding , including long-term debt ( senior notes , subordinated debt and fhlb borrowings ) and short-term borrowings ( securities sold under repurchase agreements , commercial paper and other short-term borrowings ) .
see note 10 borrowed funds and the funding sources section of the consolidated balance sheet review in this report for additional information related to our borrowings .
total senior and subordinated debt , on a consolidated basis , decreased due to the following activity : table 24 : senior and subordinated debt .

In billions
2018
January 1
$33.3
Issuances
4.5
Calls and maturities
(6.8)
Other
(.1)
December 31
$30.9

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Question: Analyse this data from a financial earnings document. assuming all matured securities were pledged as collateral , how much should we assume came from the calls?
Choices:
11.7
-3.9
4.1
1.9
1.4
Correct choice index: 3